CN2233456Y - Sealing-testing and pressure-measuring device for oil field water-flooding well - Google Patents
Sealing-testing and pressure-measuring device for oil field water-flooding well Download PDFInfo
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- CN2233456Y CN2233456Y CN95202372U CN95202372U CN2233456Y CN 2233456 Y CN2233456 Y CN 2233456Y CN 95202372 U CN95202372 U CN 95202372U CN 95202372 U CN95202372 U CN 95202372U CN 2233456 Y CN2233456 Y CN 2233456Y
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Abstract
The utility model discloses a sealing-testing and pressure-measuring device for oil field water-flooding well, belonging to the field of oil field testing technique. The utility model solves the technical problems of testing the sealing of a packer and measuring the stratification pressure of the water-flooding well with an eccentric water-distributing pipe string. The utility model comprises a sealing-testing and pressure-measuring blocking device, a special cable pulling-and-running instrument, and a ground secondary instrument. The utility model is characterized in that sealing-testing and pressure-measuring blocking device is composed of a pressure sensor, a seal section 17, and a bottom plug 19; the pressure sensor is improved by a wire vibrating manometer used by oil field; the structures of the seal section 17 and the bottom plug 19 are similar to the structures of the seal section and the bottom plug of the blocking device of the original eccentric water distributor. The utility model has the advantages of visual and reliable testing methods, etc.
Description
The utility model relates to the device of a kind of water injection well in oil fields checking sealing of packer sealing and test zonal pressure.Belong to the oilfield test technical field, it and the supporting use of eccentric water distribution pipe column comprise and test envelope pressure measurement blanking plug, private cable pulling instrument and ground secondary meter.
Seperated layer water injection is that waterflooding oil field reduces interlayer contradiction, improve one of effective ways of oil recovery rate, and the prerequisite of seperated layer water injection is to guarantee that down-hole packers at different levels must seal, and the checking sealing of packer sealing is a very important job.
Present domestic most water injection wells all adopt eccentric regulating separate stratum injection string, as shown in Figure 3, this kind tubing string is except that oil pipe 30, sleeve pipe 31, form by eccentric injection mandrel 32, packer 33, impacting tube 34, tail pipe 35 and bottom valve 36, as shown in Figure 4, eccentric injection mandrel is made up of seating nipple 37 and blanking plug 38, sealing ring 39 etc., and blanking plug departs from the oil pipe center line, occupy the tubing string side, there is main channel 43 at each injection well downhole flow regulator seating nipple center.
Introduce the existing eccentric water injection well in oil field in " oil recovery test and measuring handbook " book that in September, 79 oil industry publishing house publishes and tested encapsulation method, it is to be lowered to testing seal section with the guiding principle silk to add mechanical manometer in the main channel 43 at eccentric injection mandrel seating nipple center, change water injection well ground handling system i.e. " driving a well-closing well-drive a well ", trip out pressure gauge then, judge the sealing of packer by reading test card, the weak point of this kind method is:
1. can not directly show test results on ground, can not measure little stressor layer.Therefore can not provide scientific basis for injection allocation rationally and water injection well dynamic analysis, can not take the measure of " closing a layer responding curve of well " that scientific basis is provided when boring encrypted adjustment well.
2. can not directly judge interval sealing situation.
3. the factor of influence test success rate is many, and the test success rate is low.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, test the envelope pressure tester and provide a kind of with the matching used water injection well of eccentric water distribution pipe column, it has solved the technical problem of direct checking sealing of packer sealing of the water injection well that eccentric water distribution pipe column is arranged under the oil field and test zonal pressure.
The purpose of this utility model can reach by following measure:
This tests envelope pressure tester and the supporting use of eccentric water distribution pipe column, comprise and test envelope pressure measurement blanking plug, private cable pulling instrument and ground secondary meter three parts, it is characterized in that: test envelope pressure measurement blanking plug and form by pressure sensor, seal section 17, the end stifled 19, the taut wire pressure gauge that pressure sensor is used by the oil field improves and forms, and seal section 17, the end stifled 19 are similar with end bridging structure to the seal section of plug for eccentricity hole.Utilizing cable pulling instrument will test envelope pressure measurement blanking plug during use drops in the inclined to one side hole 41 of eccentric injection mandrel, measure by the pressure in packer and the pressure measurement blanking plug institute isolated interval and change data, and then judge whether this test zone seals, and under the situation of test zone sealing, measure zonal pressure landing data and injection rate, and can carry out well test analysis, the pressure data of test is sent to the ground secondary meter by cable and writes down, stores and draw.
The purpose of this utility model can also reach by following measure: the pressure sensor of testing in the envelope pressure measurement blanking plug is that existing taut wire pressure gauge top seal pressure cap is partly removed, and on shell 4, be added with a step 13, shell 4 and 25 screwed connections of private cable pulling instrument force feed pawl, test envelope pressure measurement blanking plug carry out after the above-mentioned improvement can with the supporting use of former eccentric water distribution pipe column, it is seated in the inclined to one side hole 41 of side-pocket mandrel can tests zonal pressure.Private cable pulling instrument is to open an inside groove in original and the matching used hanging double acting of the eccentric injection mandrel throw in catcher force feed pawl, outside main body, have trough, holding wire picks out by force feed pawl 25 inside grooves trough outside the throw in catcher main body from high temperature gauge head 1 and enters cable head 21, join with cable core, be transferred to the ground secondary meter by cable 47.
The drawing of accompanying drawing is described as follows:
Fig. 1 tests envelope pressure measurement plug structure schematic diagram;
Fig. 2 private cable pulling instrument structural representation;
The eccentric regulating separate stratum injection string schematic diagram of Fig. 3;
Fig. 4 eccentric injection mandrel schematic diagram;
Fig. 5 water injection well is directly tested envelope pressure measurement process chart.
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: test envelope pressure measurement blanking plug and form three's screwed connection by pressure sensor, seal section 17, the end stifled 19.
Pressure sensor is improved by the normal taut wire pressure gauge that uses on the oil field and forms, for make former taut wire pressure gauge can with the supporting use of eccentric injection mandrel, to test envelope pressure measurement position moves in the seating nipple eccentric orfice 41 from main channel 43, former taut wire pressure gauge has been done following some improvement: former taut wire pressure gauge upper end seal pressure cap is partly removed, be added with step 13 at shell 4, it can be stuck on the inclined to one side hole of the side-pocket mandrel step 42, and there is screw thread shell upper end, can with 25 screwed connections of pulling instrument force feed pawl.
Pressure sensor is made up of high temperature gauge head 1, sealing ring 2, shell 4, diaphragm 6, pad 7, support 15, upper grip 3, string wire 9, lower chuck 5, screw 10,14, string piece 11, electromagnet assembly 12, coil lead 8.High temperature gauge head 1 is a finished parts, is positioned to test envelope pressure measurement blanking plug topmost, and it and shell 4 screwed connections, topmost and the holding wire welding, lower end and coil lead 8 weld, and holding wire is connected with cable, and the signal that sensor is sent passes to the ground secondary meter.Diaphragm 6 upper ends and support 15 and shell 4 screwed connections, string piece 11 is fixed on the electromagnet assembly 12, electromagnet assembly 12 is screwed on support 15, string wire 9 is placed through between the upper and lower chuck 3,5, be separately fixed on support 15 and the diaphragm 6 with screw 10,14, can regulate string wire length, shell 4 has a step 13, and there are one section screw thread and 25 screwed connections of pulling instrument force feed pawl in the upper end.
The lower end screwed connection of seal section 17 and diaphragm 6, sealing section and plug for eccentricity hole seal section structural similarity, test envelope pressure tester and the supporting use of water injection well that eccentric water distribution pipe column is arranged down so that make, there is pressure transmission hole 20 at seal section 17 middle parts, upper and lower respectively have a two seals circle 16,19 screwed connections are blocked up at its lower end and the end, and pad 18 seals.
Shown in Figure 2: private cable pulling instrument is the following well tool that envelope pressure measurement blanking plug is tested in pulling, and the existing and matching used pulling and running tool of eccentric water distribution pipe column is that steel wire removes.The utility model private cable pulling instrument is that cable removes, open an inside groove in its force feed pawl 25, outside main body, have trough, holding wire picks out by force feed pawl 25 inside grooves trough outside the throw in catcher main body from high temperature gauge head 1 and enters cable head 21 parts, join with cable core, give the ground secondary meter by single core double armature cable transmission.
Force feed pawl 25 screwed connections that to test envelope pressure measurement blanking plug shell 4 upper end screw threads and private cable pulling instrument earlier during on-the-spot the use, with cable with the pulling instrument down to below the side-pocket mandrel 5 meters, carry instrument then, step by seating nipple is taken turns 23 transpositions with the lock of pulling instrument, bailer grab 24 is opened, transfer instrument and pull blanking plug 48 in the former injection well downhole flow regulator out, carry instrument again, by machine driving pulling instrument force feed pawl 25 is opened, transferring instrument makes and tests envelope pressure measurement blanking plug and be seated in the inclined to one side hole 41 of seating nipple, this moment, just in time the pressure transmission hole 20 with seating nipple inlet opening 40 and seal section 17 was relative with borehole hole that the stratum connects, under the effect of strata pressure, pressure gauge diaphragm 6 produces elastic deformation, string wire 9 tension force are changed, when being subjected to exciting, produce frequency of oscillation, electromagnetic field around the string wire 9 produces induced potential along with the variation of string wire 9 frequencies of oscillation, pass to high temperature gauge head 1 by coil lead 8, be transferred to the ground secondary meter from signal wire via cable, write down pressure-dependent corresponding induced potential frequency (or cycle), and it is deposited in internal memory, send into computer 45 by a translation interface 46 and carry out record, storage, and enter printer 44 and draw, whether thereby can judge the downhole testing interval seals, under the prerequisite of sealing, continue to measure the drop of pressure data, till straightway occurring, trip out the pulling instrument after testing, with the pulling instrument original blanking plug is thrown back in the inclined to one side hole of former seating nipple again, remove for twice and can finish testing of one deck and seal and pressure measurement work.
The utility model compared with prior art has the following advantages:
Method of testing is directly perceived, reliable, test success rate height, and can with former eccentric center water-distributing The advantages such as process matching.
Use this pressure tester can directly verify the interval of surveying sealing and can measure branch Stressor layer.
Claims (3)
1. one kind is used for water injection well in oil fields checking sealing of packer sealing and the device of testing zonal pressure, belong to the oilfield test technical field, it and the supporting use of eccentric water distribution pipe column, comprise and test envelope pressure measurement blanking plug, private cable pulling instrument and ground secondary meter three partly, it is characterized in that: test envelope pressure measurement blanking plug and form by pressure sensor, seal section (17), the end stifled (19).
2. the envelope pressure tester of testing as claimed in claim 1, it is characterized in that: described pressure sensor is that existing taut wire pressure gauge top seal pressure cap is partly removed, and on shell (4), be added with a step (13), there is screw thread shell (4) upper end, can with private cable pulling instrument force feed pawl (25) screwed connection.
3. the envelope pressure tester of testing as claimed in claim 1, it is characterized in that: described private cable pulling and running tool, be with the force feed pawl (25) of the matching used hanging double acting of eccentric injection mandrel throw in catcher in open an inside groove, the throw in catcher main body has trough outward, holding wire picks out by force feed pawl (25) inside groove from high temperature gauge head (1), trough enters cable head (21) part outside the throw in catcher main body, joins with cable core, gives the ground secondary meter by cable transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95202372U CN2233456Y (en) | 1995-01-26 | 1995-01-26 | Sealing-testing and pressure-measuring device for oil field water-flooding well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95202372U CN2233456Y (en) | 1995-01-26 | 1995-01-26 | Sealing-testing and pressure-measuring device for oil field water-flooding well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2233456Y true CN2233456Y (en) | 1996-08-21 |
Family
ID=33855545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95202372U Expired - Lifetime CN2233456Y (en) | 1995-01-26 | 1995-01-26 | Sealing-testing and pressure-measuring device for oil field water-flooding well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2233456Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080514A (en) * | 2010-12-21 | 2011-06-01 | 中国石油天然气集团公司 | Mechanical parameter measuring device of underground compression type packer and using method thereof |
| CN105649611A (en) * | 2016-02-26 | 2016-06-08 | 中国石油天然气股份有限公司 | Concentric electric layered pressure drop testing instrument and testing method thereof |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
| CN109681192A (en) * | 2019-02-02 | 2019-04-26 | 江苏省无锡探矿机械总厂有限公司 | A kind of stratum slip casting feedback pressure sensing device |
| CN109723427A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | It is a kind of can underground separation packer detecting device and method |
| CN112012723A (en) * | 2020-10-12 | 2020-12-01 | 贵州航天凯山石油仪器有限公司 | Method for long-term synchronous monitoring of concentric well layered pressure |
-
1995
- 1995-01-26 CN CN95202372U patent/CN2233456Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080514A (en) * | 2010-12-21 | 2011-06-01 | 中国石油天然气集团公司 | Mechanical parameter measuring device of underground compression type packer and using method thereof |
| CN105649611A (en) * | 2016-02-26 | 2016-06-08 | 中国石油天然气股份有限公司 | Concentric electric layered pressure drop testing instrument and testing method thereof |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
| CN109723427A (en) * | 2018-12-27 | 2019-05-07 | 贵州航天凯山石油仪器有限公司 | It is a kind of can underground separation packer detecting device and method |
| CN109681192A (en) * | 2019-02-02 | 2019-04-26 | 江苏省无锡探矿机械总厂有限公司 | A kind of stratum slip casting feedback pressure sensing device |
| CN112012723A (en) * | 2020-10-12 | 2020-12-01 | 贵州航天凯山石油仪器有限公司 | Method for long-term synchronous monitoring of concentric well layered pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |