CN104568342A - Sealing performance detecting device for LWD - Google Patents
Sealing performance detecting device for LWD Download PDFInfo
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- CN104568342A CN104568342A CN201410850057.0A CN201410850057A CN104568342A CN 104568342 A CN104568342 A CN 104568342A CN 201410850057 A CN201410850057 A CN 201410850057A CN 104568342 A CN104568342 A CN 104568342A
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- joint
- lwd
- web member
- interface system
- sealed tube
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Abstract
The invention relates to the field of logging and discloses a sealing performance detecting device for LWD. The sealing performance detecting device comprises a connecting piece, a vacuum manometer and a mechanical pump. The vacuum manometer is connected with a first connector of a T-joint, a connector I is arranged at one end of the connecting piece, a connector II is arranged at the other end of the connecting piece, the connector I is communicated with the connector II in the connecting piece, the connector I is connected with the port of an LWD instrument in a sealed mode, and the connector II is connected with a second connector of the T-joint through a first sealing pipe. The air inlet of the mechanical pump is connected with a third connector of the T-joint through a second sealing pipe, and a sealed space is formed between the port of the LWD instrument and the mechanical pump. The sealing performance detecting device for LWD is simple in structure and capable of effectively detecting the air tightness of the LWD instrument and providing a safe guarantee for underground work of the LWD instrument.
Description
Technical field
The present invention relates to well logging field, particularly relate to the device for detecting sealability of a kind of LWD.
Background technology
LWD (Logging While Drilling) means " with brill well logging ", universal is said, it is except the measurement parameter comprising MWD, also must be all or part of have geologic parameter (as: resistivity logging while drilling, with brill gamma, with brill density, with boring porosity etc.) and drilling engineering parameter (with brill drilling tool moment of torsion, with brill vibration, with boring the pressure of the drill etc.).
LWD technology is mainly used in differentiating stratum, differentiates oil gas water, judges stratigraphic fluctuation, predicts the occasions such as high pressure formation, greatly can shorten drilling period, reduce the soak time of oil gas, reduce and gather around oil layer pollution.
Application scenario due to LWD instrument mostly is underground high-voltage test environment, so propose harsh requirement to the sealing of LWD instrument, if the sealing of LWD instrument does not reach requirement, so easily occur in down-hole to fill with liquid phenomenon, namely the geology mud etc. under high pressure conditions pours into equipment by tool interface system, not only significant impact is caused to measurement result, and irreversible pollution damage is caused to LWD equipment.
To sum up, in order to ensure that LWD instrument is in underground acceptable safety operation, must detect the sealing of LWD instrument, therefore, need the device for detecting sealability researching and developing a kind of LWD, ensure the sealing of LWD instrument, the LWD instrument and equipment preventing sealing not up to standard enters underground and carries out risky operation.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the invention is: the device for detecting sealability that a kind of LWD is provided, effectively detecting the impermeability of LWD instrument, for the safety work of LWD instrument in underground provides safeguard.
In order to solve the technical matters in background technology, the invention provides the device for detecting sealability of a kind of LWD, comprise web member, pressure vacuum gauge and mechanical pump, described pressure vacuum gauge is connected with the first joint of three-way connection, one end of described web member is provided with joint I, the other end is provided with joint II, described joint I is communicated with the inside of joint II at described web member, wherein said joint I is tightly connected with LWD tool interface system, described joint II is connected with the second joint of described three-way connection by the first sealed tube, the air intake opening of described mechanical pump is connected with the 3rd joint of described three-way connection by the second sealed tube, the space of sealing is formed between described LWD tool interface system to mechanical pump.
Particularly, the external diameter of the joint I of described web member is slightly less than the internal diameter of described LWD tool interface system, and described joint I realizes being tightly connected by O RunddichtringO with LWD tool interface system.
Preferably, described web member is made of metal, described web member comprises worktable, the lower surface of described worktable is located at by described joint I, the upper surface of described worktable is located at by described joint II, the upper surface of described worktable is fixed with two compression legs, and the both sides of described joint II are located at by described compression leg, and described compression leg is used for joint I to be pressed into described LWD tool interface system.
Preferably, described compression leg is provided with through hole, is equipped with draw ring in described through hole, and described draw ring is used for web member to pull out from LWD tool interface system.
Particularly, described first sealed tube one end is tightly connected by the first nut and described joint II, described joint II inside is provided with the space of accommodating described first sealed tube one end, the outside surface of described joint II is provided with the external thread matched with described first nut inside thread, described first sealed tube one end fixed cover is equipped with packing ring, and described packing ring departs from the end of described first sealed tube for limiting described first nut.
Alternatively, described compression leg is fixed on described worktable by the mode of threaded engagement or welding.
Further, the outer ring, joint I upper surface of described web member is provided with the first circular conical surface, the edge of described LWD tool interface system is provided with the second circular conical surface coordinated with described first circular conical surface, be provided with the joint groove of a round below the circular conical surface of described joint I, described joint groove is for placing described O RunddichtringO.
Preferably, the range of described pressure vacuum gauge is-0.1-0MPa.
Alternatively, switch valve is provided with between the air intake opening of described mechanical pump and described second sealed tube.
The principle of the device for detecting sealability of LWD of the present invention is by LWD instrument and the airtight connection of mechanical pump by sealed tube, utilize the air in mechanical pump extraction path, the pressure vacuum gauge pressure recorded in sealing propertytest path is utilized to be close to vacuum pressure, the switch valve of cutting out outside mechanical pump air intake opening stops bleeding, if sealing propertytest path continues to keep negative pressure constant for a long time, so illustrate that the sealing of LWD instrument is good; If the pressure of sealing propertytest path raises through is after a while even 0, illustrated that gas enters sealing propertytest path from LWD instrument, what LWD instrument was so described does not have sealing.
In sum, the device for detecting sealability of LWD of the present invention effectively can detect the impermeability of LWD instrument, for LWD instrument provides safe guarantee in the operation of underground.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the device for detecting sealability of the LWD that the embodiment of the present invention provides;
Fig. 2 is the structural representation of web member in the device for detecting sealability of the LWD that the embodiment of the present invention provides;
Fig. 3 is the sectional view of web member in the device for detecting sealability of the LWD that the embodiment of the present invention provides;
Fig. 4 is the connection diagram of web member and LWD tool interface system in the device for detecting sealability of the LWD that the embodiment of the present invention provides.
Wherein, in figure, Reference numeral corresponds to: 1-web member, 2-joint I, 21-joint groove, 3-joint II, 4-worktable, 5-compression leg, 51-through hole, 52-draw ring, 6-O RunddichtringO.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
The structured flowchart of the device for detecting sealability of the LWD that embodiment: Fig. 1 provides for the embodiment of the present invention, can clearly be seen that from figure, the device for detecting sealability of the LWD that the present embodiment provides comprises web member 1, pressure vacuum gauge and mechanical pump, described pressure vacuum gauge is connected with the first joint of three-way connection, one end of described web member 1 is provided with joint I 2, the other end is provided with joint II 3, described joint I 2 is communicated with the inside of joint II 3 at described web member 1, wherein said joint I 2 is tightly connected with LWD tool interface system, described joint II 3 is connected with the second joint of described three-way connection by the first sealed tube, the air intake opening of described mechanical pump is connected with the 3rd joint of described three-way connection by the second sealed tube, the space of sealing is formed between described LWD tool interface system to mechanical pump.
Wherein, described pressure vacuum gauge is vacuum table, and the range of described pressure vacuum gauge is-0.1-0MPa.
Described first sealed tube one end is tightly connected by the first nut and described joint II 3, described joint II 3 inside is provided with the space of accommodating described first sealed tube one end, the outside surface of described joint II 3 is provided with the external thread matched with described first nut inside thread, described first sealed tube one end fixed cover is equipped with packing ring, and described packing ring departs from the end of described first sealed tube and the impermeability for strengthening connection for limiting described first nut.Operation steps is: described joint II 3 is filled in one end of the first sealed tube, is then screwed in described first nut by described joint II 3, and the joint II 3 namely achieving web member 1 is connected with the impermeability of the first sealed tube.Adopt and use the same method, sealed tube can be realized respectively and be connected with the impermeability of three-way connection, and sealed tube is connected with the impermeability of pressure valve.
The structural representation of web member in the device for detecting sealability of the LWD that Fig. 2 provides for the embodiment of the present invention, as can be seen from Figure, described web member 1 is made of metal, described web member 1 comprises worktable 4, the lower surface of described worktable 4 is located at by described joint I 2, the upper surface of described worktable 4 is located at by described joint II 3, the upper surface of described worktable 4 is fixed with two compression legs 5, the both sides of described joint II 3 are located at by described compression leg 5, and described compression leg 5 is for being pressed into described LWD tool interface system by joint I 2.
Preferably, described compression leg 5 is fixed on described worktable 4 by thread fiting mode, and significantly, it is also feasible scheme that compression leg 5 is weldingly fixed on described worktable 4.
Particularly, the sectional view of web member in the device for detecting sealability of the LWD that Fig. 3 provides for the embodiment of the present invention, from in figure, the external diameter of the joint I 2 of described web member 1 is slightly less than the internal diameter of described LWD tool interface system, the outer ring, joint I 2 upper surface of described web member 1 is provided with the first circular conical surface, the edge of described LWD tool interface system is provided with the second circular conical surface coordinated with described first circular conical surface, described second circular conical surface play the guiding role when pressing down web member 1, the joint groove 21 of a round is provided with below the circular conical surface of described joint I 2, O RunddichtringO is placed in described joint groove 21, by second circular conical surface of the circular conical surface of described joint I 2 facing to described LWD tool interface system, firmly press down described compression leg 5, described joint I 2 is pressed into LWD tool interface system, the outside of described O RunddichtringO and the inner side of described LWD tool interface system fit tightly, as shown in Figure 4, achieve described web member 1 to be tightly connected with described LWD tool interface system.
More preferably, before pressing down described web member 1, described joint I 2 is nested with an O RunddichtringO 6, improves the impermeability of described raised line sealing holding in described joint groove 21.
Preferably, described compression leg 5 is provided with through hole 51, is equipped with draw ring 52 in described through hole 51, and described draw ring 52 is not yielding, after completing air-leakage test test, can be pulled out by web member 1 by catching described draw ring 52 from LWD tool interface system.
So far, the device for detecting sealability of described LWD has realized a series of impermeability and has connected, complete the sealing propertytest of LWD, preferably, need to arrange switch valve between the air intake opening and described second sealed tube of described mechanical pump: open described switch valve and mechanical pump, mechanical pump starts outwards to bleed from sealing propertytest path, until the close-0.1MPa of the reading of described pressure vacuum gauge; Close described switch valve, observe described vacuum pressure meter reading, if reading remains unchanged for a long time, then described sealing propertytest result is that described LWD instrument has sealing; If vacuum pressure meter reading becomes through a period of time and even becomes 0 greatly, then described sealing propertytest result is that described LWD instrument does not have sealing.
The device for detecting sealability of LWD of the present invention effectively can detect the impermeability of LWD instrument, for LWD instrument provides safe guarantee in the operation of underground.
Above disclosedly be only several preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (9)
1. the device for detecting sealability of a LWD, it is characterized in that, comprise web member (1), pressure vacuum gauge and mechanical pump, described pressure vacuum gauge is connected with the first joint of three-way connection, one end of described web member (1) is provided with joint I (2), the other end is provided with joint II (3), described joint I (2) is communicated with the inside of joint II (3) at described web member (1), wherein said joint I (2) is tightly connected with LWD tool interface system, described joint II (3) is connected with the second joint of described three-way connection by the first sealed tube, the air intake opening of described mechanical pump is connected with the 3rd joint of described three-way connection by the second sealed tube, the space of sealing is formed between described LWD tool interface system to mechanical pump.
2. the device for detecting sealability of LWD as claimed in claim 1, it is characterized in that, the external diameter of the joint I (2) of described web member (1) is slightly less than the internal diameter of described LWD tool interface system, and described joint I (2) realizes being tightly connected by O RunddichtringO (6) with LWD tool interface system.
3. the device for detecting sealability of LWD as claimed in claim 1, it is characterized in that, described web member (1) is made of metal, described web member (1) comprises worktable (4), the lower surface of described worktable (4) is located at by described joint I (2), the upper surface of described worktable (4) is located at by described joint II (3), the upper surface of described worktable (4) is fixed with two compression legs (5), the both sides of described joint II (3) are located at by described compression leg (5), described compression leg (5) is for being pressed into described LWD tool interface system by joint I (2).
4. the device for detecting sealability of LWD as claimed in claim 3, it is characterized in that, described compression leg (5) is provided with through hole (51), be equipped with draw ring (52) in described through hole (51), described draw ring (52) is for pulling out web member (1) from LWD tool interface system.
5. the device for detecting sealability of LWD as claimed in claim 2, it is characterized in that, described first sealed tube one end is tightly connected by the first nut and described joint II (3), described joint II (3) inside is provided with the space of accommodating described first sealed tube one end, the outside surface of described joint II (3) is provided with the external thread matched with described first nut inside thread, described first sealed tube one end fixed cover is equipped with packing ring, and described packing ring departs from the end of described first sealed tube for limiting described first nut.
6. the device for detecting sealability of the LWD as described in claim 3 or 4, is characterized in that, described compression leg (5) is fixed on described worktable (4) by the mode of threaded engagement or welding.
7. the device for detecting sealability of the LWD as described in claim 2 or 5, it is characterized in that, joint I (2) outer ring, upper surface of described web member (1) is provided with the first circular conical surface, the edge of described LWD tool interface system is provided with the second circular conical surface coordinated with described first circular conical surface, be provided with the joint groove (21) of a round below the circular conical surface of described joint I (2), described joint groove (21) is for placing described O RunddichtringO.
8. as the device for detecting sealability of the LWD in claim 1-5 as described in any one, it is characterized in that, the range of described pressure vacuum gauge is-0.1-0MPa.
9. the device for detecting sealability of LWD as claimed in claim 7, is characterized in that, be provided with switch valve between the air intake opening of described mechanical pump and described second sealed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850057.0A CN104568342A (en) | 2014-12-31 | 2014-12-31 | Sealing performance detecting device for LWD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850057.0A CN104568342A (en) | 2014-12-31 | 2014-12-31 | Sealing performance detecting device for LWD |
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| Publication Number | Publication Date |
|---|---|
| CN104568342A true CN104568342A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410850057.0A Pending CN104568342A (en) | 2014-12-31 | 2014-12-31 | Sealing performance detecting device for LWD |
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| Country | Link |
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| CN (1) | CN104568342A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741309A (en) * | 2017-11-30 | 2018-02-27 | 贝兹维仪器(苏州)有限公司 | A kind of separate type device for detecting sealability of LWD |
| CN107741307A (en) * | 2017-11-30 | 2018-02-27 | 贝兹维仪器(苏州)有限公司 | A kind of LWD sealing suppresses test device manually |
| CN107817074A (en) * | 2017-11-30 | 2018-03-20 | 贝兹维仪器(苏州)有限公司 | A kind of integrated sealing system safety testing device |
| CN107817073A (en) * | 2017-11-30 | 2018-03-20 | 贝兹维仪器(苏州)有限公司 | A kind of mechanical sealing system safety testing device |
| CN108061625A (en) * | 2017-11-30 | 2018-05-22 | 贝兹维仪器(苏州)有限公司 | A kind of dismountable device for detecting sealability |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741309A (en) * | 2017-11-30 | 2018-02-27 | 贝兹维仪器(苏州)有限公司 | A kind of separate type device for detecting sealability of LWD |
| CN107741307A (en) * | 2017-11-30 | 2018-02-27 | 贝兹维仪器(苏州)有限公司 | A kind of LWD sealing suppresses test device manually |
| CN107817074A (en) * | 2017-11-30 | 2018-03-20 | 贝兹维仪器(苏州)有限公司 | A kind of integrated sealing system safety testing device |
| CN107817073A (en) * | 2017-11-30 | 2018-03-20 | 贝兹维仪器(苏州)有限公司 | A kind of mechanical sealing system safety testing device |
| CN108061625A (en) * | 2017-11-30 | 2018-05-22 | 贝兹维仪器(苏州)有限公司 | A kind of dismountable device for detecting sealability |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Naizhen Inventor after: Ren Wei Inventor after: Zhao Qihui Inventor after: Gu Weikang Inventor after: Li Yonghe Inventor after: Bai Rui Inventor after: Jin Zhaohua Inventor after: Zhang Lei Inventor after: Liu Ce Inventor after: Chou Chunsong Inventor before: Liu Ce Inventor before: Chou Chunsong Inventor before: Ren Wei |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180105 Address after: 100000 Beijing Chaoyang District Anli Road No. 101 Applicant after: Chinese Petroleum Group Changcheng Drilling Engineering Co., Ltd. Address before: 215151 Suzhou province high tech Zone, Jinsha River Road, No. 158 (Environmental Protection Industrial Park), No. 5 West plant Applicant before: BITSWAVE (SUZHOU) CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |