CN1325757C - Layered testing process and device for oil casing of gas production well of unconsolidated sandstone gas field - Google Patents
Layered testing process and device for oil casing of gas production well of unconsolidated sandstone gas field Download PDFInfo
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- CN1325757C CN1325757C CNB03150096XA CN03150096A CN1325757C CN 1325757 C CN1325757 C CN 1325757C CN B03150096X A CNB03150096X A CN B03150096XA CN 03150096 A CN03150096 A CN 03150096A CN 1325757 C CN1325757 C CN 1325757C
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
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Abstract
The invention relates to a layered test process and equipment for an oil casing of a gas recovery well of a unconsolidated sandstone gas field, which can improve the yield of a single well and obtain and analyze production dynamic data. The site operation is simple, and the cost is low.
Description
Technical field:
The present invention relates to a kind ofly improve well yield and produce loose sands tone gas gas recovery well tubing and casing zonal testing technology and the equipment thereof that dynamic data is asked for and analyzed.
Background technology:
The technical method of dealing with problems at present has following several:
(1) use the test of well head high-precision electronic pressure gauge, then with calculation of pressure to the shaft bottom, the method only is fit to pure gas well, and is bigger with time error, and is necessary further research, contrast.
(2) memory electronic pressure gauge is installed on the packer, when operation, in the lower going-into-well, uninterruptedly tests, or design the program time switch well, take out when waiting operation next time.Its shortcoming is the pressure gauge memory limited, and requires the pressure gauge quality very good, can work long hours, and also that program setting is good before operation, therefore, split closing well cycle and time restriction strictness, be unfavorable for producing.
(3) direct reading electronic gauge is installed on the packer, when operation in the lower going-into-well, and cable head is reserved well head, carry ground installation when testing at every turn at the well head direct reading test.Its difficult point is how well head institute testing cable head place seals, and compares with memory-type to be lowered to instrument at every turn and all need to stay more than 1000 meter cable in well, and the operation procedure more complicated is if can reach 3 years fixed tubular columns then more suitable.
(4) instrument can launch wireless signal is placed in the down-hole, but this quasi-instrument is generally relatively more expensive, generally about 3,000,000 yuan, and influenced by battery capacity according to the Schlumberger company introduction.
(5) adopt tubing string and carry out device and carry out downhole testing by improve dividing.Adopt at branch and to install sliding sleeve switch on the tubing string additional, and join and produce test port and carry out dropping-fishing test.But this kind method affect output adopts different valve productions for each layer simultaneously, can't ask for the data situation under the no interlayer interference of each layer.Press, flow warm data for asking for each layer stream under normal circumstances, and the transient well test data requirement is longer stabilization time, and part information can't enroll, each laminar flow amount can't be corresponding one by one with PRESSURE DATA.
Summary of the invention:
The objective of the invention is to design a kind of suitable loose sands tone gas tubing and casing in gas production, do not influence dynamic data admission, measure the Processes and apparatus of PRESSURE DATA.
Concrete scheme of the present invention is: direct-reading pressure gauge probe is fixed on outside the oil pipe, is lowered into the gas-bearing formation middle part with oil pipe in sleeve pipe, by the pressure measurement equipment of cable connection pressure gauge probe with well head, test at the well head direct access mode.Tubing and casing zonal testing system comprises: packer (containing sliding sleeve switch), the wireline test assembly, well mouth sealing device, ground testing system four parts, its contained assembly is described in detail as follows: packer, be positioned at the outer lower end of oil pipe, between sleeve pipe, packer divides vapour barrier, make two cover producing zones not disturb production mutually, the wireline test assembly is to be popped one's head in by pressure gauge, locator card, outer protective jacket, double armoured cable constitutes, the pressure gauge probe is contained in the outer protective jacket, by the locator card that links to each other with outer protective jacket, be fixed on the oil pipe on packer top, cable is fixed on outside the oil pipe, one end links to each other with the pressure gauge probe, the other end is reserved in well head and is sealed by seal fitting, wireline test assembly and well head black box are this technology core, major function is for carrying out the PRESSURE DATA test, guarantee instrument stabilizer work and gas well steady production, ground testing system contains vibratory string electronic pressure gauge (the pressure gauge probe of replaceable different model), signal box (purchasing simultaneously) with pressure gauge, computer (supporting arbitrary money of Windows operating system to get final product) and transmission cable (single instrument adopts Ф 5.6mm cable dress cable), its effect is that pressure signal is carried out digital-to-analogue conversion, storage and transmission.
The technology of the present invention has solved following problem:
1, to the sleeve pipe producing zone, the stream that can test arbitrary moment is pressed, static pressure, and test pressure recovery at any time, drop of pressure data and other transient well test as reservoir delineation test, disturbing pulse well testing, and do not need stabilization time before the test;
2, because pressure gauge directly down to the gas-bearing formation middle part, has reduced the influence that becomes the well storage;
3, use the high-precision electronic pressure gauge can obtain the effect of testing as cable direct reading.
Pressure and output are measured simultaneously when 4, testing, and have improved the corresponding relation of pressure with output;
5, tubing and casing can be produced simultaneously at the scene, test simultaneously, and do not disturb mutually.
6, site operation is simple, and cost is low.
Description of drawings:
Fig. 1. wireline test component groups assembling structure schematic diagram.
Fig. 2. cable well head seal fitting structural representation.
Fig. 3. test suite down-hole part-structure schematic diagram.
Wherein:
1. the sheath gland 2. pressure gauge probe jackets 3. pressure gauges 4. cable pressure heads of popping one's head in cover 5. strain relief clamps, 6. tubing centrilizers, 7. cables, 8. oil pipes, 9. tubing centrilizers, 10. strain relief clamps, 11. christmas tree big fours, 12. well head main gate valves, 13. cable flanges, 14. pressure gauge locator card 15.Y341 packers, 16. tubing and casing, 17. sliding sleeve switches, 18. cable seal overcoats, 19. sealing rings, 20. packing rings, 21. cylindricality ends, 22. taper cable pressure heads, 23. sealing rings, 24. cable pressure heads and cover 25. cable core seal covers, 26. banana plug glands, 27. head protectors, 28. banana plugs, 29. sealing rings, 30. sealing rings
The specific embodiment:
The Y341 type packer 15 that will have sliding sleeve switch 17 is stuck in oil pipe 8 outer lower ends, with the two-layer gas-bearing formation middle part of oil pipe from tubing and casing 16 down to required separation, the cable pressure head lid 4 that cable 7 passes on the sheath 2 that links to each other with locator card 14 is connected with pressure gauge probe 3, pressure gauge probe is packed in the pressure gauge sheath, sheath gland 1 compaction pressure meter is popped one's head in, the pressure gauge probe adds epoxy resin with two-layer steel bushing and carries out enhanced leaktightness and insulation, causes short circuit in case formation water corrodes.Six square bolts are fixed on packer top with locator card in using, and the down-hole is gas-bearing formation middle part (calculating), begins to go into the well.For the protection cable is not damaged in the process of going into the well, every Oil-saving pipe uses two strain relief clamps 5,10 that cable is fixed on the oil pipe.Simultaneously, the per 50 meters use centralizers 6,9 of coiled tubing are set upright.Down to the precalculated position.The christmas tree big four 11 of slinging, the well head cable passes the christmas tree big four by first well head main gate valve 12 of well one side, use cable flange 13, the apertured flanges dish passes cable, use cable seal overcoat 18 fitted seal circles 19, packing ring 20 and tapered cable pressure head 22 sealing and curing at well head, connect cable with banana plug 28, use cylindricality cable head 21, cable pressure head lid 24, sealing ring 23,29,30, banana plug gland 26, cable core seal cover 25 that joint is solidified sealing, and adopt hard hat 27 to cover plug, prevent that dust and greasy filth from polluting.
Instrument go into the well method and step:
1., with the process pipe string that combines and instrument lead down to design attitude, install well head;
2., in oil pipe, drop into steel ball, build the pressure about 15MPa, stablized 5 minutes, make packer set, the seat envelope is removed the locking of intubate and packer simultaneously, continues to be forced into about 20MPa, descend to pressure, open bottom gas production passage, thereby realize that one-trip string oil jacket branch adopts suddenly.
3., often use go into the well in process instrument and cable of instrument monitoring whether intact on ground.
4., be lowered to the control bar from oil pipe, open cycling switch, replace out well killing fluid by well testing truck.
5., trip out control bar, beginning ordinary production.
Method of testing and step:
Every testing time brings to the well site with pressure gauge terrestrial interface case and computer, connects interface, can carry out direct reading test.Data are stored on the computer, are text, can edit, copy, transmit and handle.
The oil jacket that carries out in a puckery northern gas field divides in excavating technology application, test and the test, has studied data admission way and tool combinations design scheme and has carried out field trial, has reached tubing and casing gas production simultaneously and has not influenced the success that dynamic data is enrolled.Obtained the stable high yield of gas well (greater than daily gas 10 * 10
4m
3/ d) and the well test data of high-quality.
Claims (4)
1. loose sands tone gas gas recovery well tubing and casing zonal testing technology, it is characterized in that: direct-reading pressure gauge probe is fixed on outside the oil pipe, in sleeve pipe, be lowered into the gas-bearing formation middle part with oil pipe,, test at the well head direct access mode by the pressure gauge of cable connection pressure gauge probe with well head.
2. equipment of realizing loose sands tone gas gas recovery well tubing and casing zonal testing technology according to claim 1, it is characterized in that: tubing and casing zonal testing system comprises: packer, the wireline test assembly, well mouth sealing device, ground testing system four parts, packer is positioned at the outer lower end of oil pipe, between sleeve pipe, the wireline test assembly is to be popped one's head in by pressure gauge, locator card, outer protective jacket, double armoured cable constitutes, the pressure gauge probe is contained in the outer protective jacket, by the locator card that links to each other with outer protective jacket, be fixed on the oil pipe on packer top, cable is fixed on outside the oil pipe, one end links to each other with the pressure gauge probe, the other end is reserved in well head and is sealed by seal fitting, and ground testing system contains the vibratory string electronic pressure gauge, computer, and transmission cable.
3. the equipment of realization according to claim 2 loose sands tone gas gas recovery well according to claim 1 tubing and casing zonal testing technology, it is characterized in that: well mouth sealing device is by cable seal overcoat fitted seal circle, packing ring and tapered cable pressure head sealing and curing, connect the same banana plug of cable, use cylindricality cable head, cable pressure head lid, sealing ring, banana plug gland, cable core seal cover solidify sealing with plug, and adopt anti-backpiece cap to live the plug formation.
4. the equipment of realization according to claim 2 loose sands tone gas gas recovery well according to claim 1 tubing and casing zonal testing technology is characterized in that: the outer protective jacket of pressure gauge probe is to add epoxy resin by two-layer steel bushing to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03150096XA CN1325757C (en) | 2003-08-01 | 2003-08-01 | Layered testing process and device for oil casing of gas production well of unconsolidated sandstone gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03150096XA CN1325757C (en) | 2003-08-01 | 2003-08-01 | Layered testing process and device for oil casing of gas production well of unconsolidated sandstone gas field |
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| Publication Number | Publication Date |
|---|---|
| CN1580487A CN1580487A (en) | 2005-02-16 |
| CN1325757C true CN1325757C (en) | 2007-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB03150096XA Expired - Fee Related CN1325757C (en) | 2003-08-01 | 2003-08-01 | Layered testing process and device for oil casing of gas production well of unconsolidated sandstone gas field |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440705B (en) * | 2008-12-17 | 2013-06-12 | 新疆华油油气工程有限公司 | Super-deep well wireless transmission well testing system |
| CN104420866A (en) * | 2013-09-04 | 2015-03-18 | 中国石油天然气股份有限公司 | Interlayer interference test method and interlayer interference test device |
| CN104912545B (en) * | 2015-06-08 | 2017-09-15 | 河北昆瑞工程技术有限公司 | Electric control type oil pipe inner packer and direct-reading pressure meter combined well testing system and method |
| CN112324425B (en) * | 2020-10-22 | 2023-07-14 | 东营杰开智能科技有限公司 | Coiled tubing layering test device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073474U (en) * | 1990-08-29 | 1991-03-20 | 大庆石油管理局试油试采公司 | Monitor on ground for measuring pressure of stratum |
| CN2228977Y (en) * | 1994-09-02 | 1996-06-12 | 华北石油管理局油气井测试公司 | Bidirectional positioning device for direct-reading electronic pressure gauge |
| CN1059011C (en) * | 1997-11-03 | 2000-11-29 | 江苏石油勘探局 | Testing device |
-
2003
- 2003-08-01 CN CNB03150096XA patent/CN1325757C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073474U (en) * | 1990-08-29 | 1991-03-20 | 大庆石油管理局试油试采公司 | Monitor on ground for measuring pressure of stratum |
| CN2228977Y (en) * | 1994-09-02 | 1996-06-12 | 华北石油管理局油气井测试公司 | Bidirectional positioning device for direct-reading electronic pressure gauge |
| CN1059011C (en) * | 1997-11-03 | 2000-11-29 | 江苏石油勘探局 | Testing device |
Non-Patent Citations (5)
| Title |
|---|
| 两层合采井分层测压技术研究 邓广宇，石油仪器，第17卷第2期 2003 * |
| 两层合采井分层测压技术研究 邓广宇，石油仪器，第17卷第2期 2003;塔河油气井下压力计的应用 董斌，油气井测试，第11卷第6期 2002;塔河油气田井下压力计的应用 董斌，油气井测试，第11卷第6期 2002;直读式电子压力计在煤层气测试中的应用 张麦云等，油气井测试，第9卷第4期 2000 * |
| 塔河油气井下压力计的应用 董斌，油气井测试，第11卷第6期 2002 * |
| 塔河油气田井下压力计的应用 董斌，油气井测试，第11卷第6期 2002 * |
| 直读式电子压力计在煤层气测试中的应用 张麦云等，油气井测试，第9卷第4期 2000 * |
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| CN1580487A (en) | 2005-02-16 |
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