CN101397905B - Stratified static pressure combination tool for water injection well - Google Patents
Stratified static pressure combination tool for water injection well Download PDFInfo
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- CN101397905B CN101397905B CN2008101373719A CN200810137371A CN101397905B CN 101397905 B CN101397905 B CN 101397905B CN 2008101373719 A CN2008101373719 A CN 2008101373719A CN 200810137371 A CN200810137371 A CN 200810137371A CN 101397905 B CN101397905 B CN 101397905B
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Abstract
The invention relates to a water injection well layering static pressure composite instrument which mainly solves the problem that the existing water injection well layering pressure measuring tool can not simultaneously measure flow and pressure and inaccurate measuring results are caused. The composite instrument is characterized in that: one side of a switch (1) is provided with a liquid inlet (3) and the lower part thereof is connected with a differential pressure flow meter (12) provided with an upper channel (5) by internal threads; the upper part of the upper channel (5) is provided with a water nozzle (3) and the middle part thereof is provided with a sensor (6), a sensor (7) and a sensor (8) in sequence. The lower part of the differential pressure flow meter (12) is connected with a delivering positioner (16) provided with a lower channel (9) by an outer sheath (13); the side surface of the delivering locator (16) is provided with a lateral arm (10) provided with a liquid outlet (11) and the middle part and the lower part thereof is respectively provided with a positioning detent (14) and a guiding detent (15). The water injection well layering static pressure composite instrument is characterized by being capable of measuring flow and pressure simultaneously, eliminates the influence of testing tools on information explanation and provides correct stratum parameters for geological development.
Description
Technical field:
The present invention relates to a kind of instrument of water injection well in oil fields delaminating pressure testing, especially stratified static pressure combination tool for water injection well.
Background technology:
The delaminating pressure testing of water injection well in oil fields is an important process in the oilfield development process, it can the fine description water injection well around the stratum, judge that well formation is communicated with situation, understands oil reservoir and rush down pressure energy power, check injection profile logging result etc.And the testing tool of water injection well delaminating pressure testing directly influences the measurement result of layering static pressure, and the test of water injection well delaminating pressure testing generally comprises blocking type pressure gauge and the pressure measurement by common tubing string central passage.For the blocking type pressure gauge, its inadaptability mainly shows two aspects, the one, in test process, the flow that injects the stratum is increased, produce a pressure disturbance, and then the drop of pressure curve is exerted an influence, and this influence can't be eliminated in data interpretation; The 2nd, think on the general theory, at the moment of dropping into blanking plug downhole closing, and this instantaneous pressure point is used as the participation of stream pressure point calculates, because the pulling process has changed normal water filling state during test, so, the stream pressure value that first point pressure be difficult to guarantee when being normal water filling produces considerable influence to the explanation of data.For the pressure measurement mode of common tubing string central passage, owing to the power problem that is sealed to of seal section itself, and the unbalanced influence of interval pressure, its sealing effectiveness does not reach technical requirements, has the test problem of stratified flow pressure and flow equally.Therefore, in sum, existing water injection well delaminating pressure testing instrument flow and pressure can only be measured respectively, and test result is inaccurate.
Summary of the invention:
Can not measure flow and pressure simultaneously and make the inaccurate deficiency of measurement result in order to overcome existing water injection well delaminating pressure testing instrument, the invention provides a kind of stratified static pressure combination tool for water injection well, this stratified static pressure combination tool for water injection well has the advantages that to record flow and pressure simultaneously, eliminated the influence of testing tool to a certain extent, for the geology exploitation provides formation parameter accurately to data interpretation.
Technical scheme of the present invention is: a kind of stratified static pressure combination tool for water injection well, pressure sensor before comprising switch, mouth, behind the mouth, switch one side has inlet and bottom to be connected with the differential pressure flow meter that upper channel is arranged by internal thread, upper channel top is equipped with water nozzle, the middle part is equipped with pressure sensor behind pressure sensor before the mouth, flow transmitter, the mouth successively, the differential pressure flow meter bottom is connected with the delivery locator that lower channel is arranged by overcoat, delivering the locator side has the side limb that has liquid outlet, and middle part, bottom are equipped with locating detent, guide grab respectively.
The present invention has following beneficial effect: owing to adopt such scheme, pressure sensor, flow transmitter before mouth arranged on the differential pressure flow meter, behind the mouth, can record before the mouth during the normal water filling of test zone respectively and pressure behind the mouth, they have represented tubing pressure and strata pressure under the normal water filling condition respectively, flow transmitter writes down flow simultaneously, after treating that water filling is stable, switch will cut out according to the time of prior setting, promptly close traffic channel, can record strata pressure and the tubing pressure behind this interval downhole closing this moment.Locating detent and guide grab that the bottom is delivered on the locator have improved the accuracy of location, make instrument stressed more balanced, have reduced because of the excessive probability that causes instrument damage of instrument local pressure.The present invention is in water injection well layering static pressure test process, can replace conventional injection well downhole flow regulator blanking plug, traffic channel as water filling, realized the down-hole automatic switch valve, reached the purpose of time switch well, can test simultaneously that stream is accurately pressed, the regime flow of pressure and individual layer before the mouth, behind the mouth, make pressure and flow all under stable condition, record, and can measure simultaneously, eliminated the influence of test technology to a certain extent, for the geology exploitation provides formation parameter accurately to data interpretation.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
1-switch among the figure, 2-piston, 3-inlet, 4-water nozzle, pressure sensor before the 5-upper channel, 6-mouth, pressure sensor behind the 7-mouth, 8-flow transmitter, 9-lower channel, 10-side limb, 11-liquid outlet, the 12-differential pressure flow meter, the 13-overcoat, the 14-locating detent, the 15-guide grab, 16-delivers locator.
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing:
By shown in Figure 1, a kind of stratified static pressure combination tool for water injection well comprises switch 1, pressure sensor (6,7), flow transmitter 8, and switch 1 is an intelligent switch, is existing matured product, can regularly open or close the water filling when anterior layer according to the setting of ground program; Switch 1 middle part is that piston 2, one sides have inlet 3, and the motion of piston 2 is by switch 1 control, and when piston 2 moved upward, inlet 3 was opened, when piston 2 moves downward, and inlet 3 closures.Switch 1 bottom is connected with differential pressure flow meter 12 by internal thread, there is upper channel 5 differential pressure flow meter 12 inside, the position of upper channel 5 is corresponding with inlet 3, make the liquid that enters by inlet 3 can flow to upper channel 5, upper channel 5 tops are equipped with water nozzle 4, water nozzle 4 is the water nozzle of test zone injection well downhole flow regulator, when the test beginning, with its upper channel 5 tops of packing into; Upper channel 5 middle parts are equipped with pressure sensor 7 behind pressure sensor 6 before the mouth, flow transmitter 8, the mouth from top to bottom successively, measure pressure behind pressure before the mouth, flow, the mouth respectively, therefore can finish the measurement of pressure and flow on an instrument simultaneously.When the normal water filling of interval, before the mouth and the flowing pressure behind the mouth represented tubing pressure and strata pressure under the normal water filling condition respectively, because the internal diameter of water nozzle is less, therefore pressure numerically has difference behind preceding pressure of mouth and the mouth, its difference is a choke pressure loss, the flow of these intervals of flow transmitter 8 record when closing traffic channel, can record tubing pressure and strata pressure behind this interval downhole closing.Differential pressure flow meter 12 bottoms are connected with delivery locator 16 by overcoat 13, overcoat 13 has also guaranteed the sealing of fluid passage simultaneously, the effect of delivering locator 16 is that this combination instrument is positioned at the appointment interval, and replace former blanking plug to control the flow direction of water filling, do not influence simultaneously the injection of other interval, delivering locator 16 tops is high-pressure rubber pipe, there is lower channel 9 inside, top one side has side limb 10, side limb 10 inside have liquid outlet 11, side limb 10 is identical with the blanking plug specification, when delivery locator 16 was positioned at the appointment interval, the inclined to one side hole of injection well downhole flow regulator can be opened and drop into to side limb 10 automatically, and liquid is through switch 1, differential pressure flow meter 12, high-pressure rubber pipe, side limb 10 injects the stratum, deliver the middle part of locator 16, the bottom is equipped with locating detent 14 respectively, guide grab 15, locating detent 14 is two, is symmetrically distributed, and can improve the accuracy of location, make instrument stressed more balanced, reduced because of the excessive probability that causes instrument damage of instrument local pressure.
When carrying out flow and pressure test, at first the water nozzle taking-up of test zone injection well downhole flow regulator is inserted in this combination instrument, be installed in upper channel 5 tops, to make up instrument then and put into the test layer position, at this moment, this combination instrument is at locating detent 14, be positioned at this interval under the effect of guide grab 15, make the normal water filling of interval, this moment, differential pressure flow meter 12 was by before the mouth, pressure sensor (6 behind the mouth, 7) record before the mouth respectively and the flowing pressure behind the mouth, they have represented tubing pressure and strata pressure under the normal water filling condition respectively, differential pressure flow meter 12 is by the flow of flow transmitter 8 these intervals of record simultaneously, after treating that water filling is stable, electric intelligent switch 1 will cut out according to the time of prior setting, promptly close inlet 3, thereby close traffic channel, can pass through pressure sensor (6 this moment, 7) record tubing pressure and strata pressure behind this interval downhole closing, after the closed-in time reaches design time, electric intelligent switch 1 was opened according to the time of prior setting, opened inlet 3, thereby opened traffic channel, can record this moment before the mouth under the normal water filling condition once more and the flowing pressure behind the mouth, and the flow of interval.
The present invention is with intelligent electric switch 1, differential pressure flow meter 12 and delivery locator 16 3 parts link together, in water injection well layering static pressure test process, can replace conventional injection well downhole flow regulator blanking plug, traffic channel as water filling, realized the down-hole automatic switch valve, reached the purpose of time switch well, can test stream pressure accurately, before the mouth, the regime flow of pressure and individual layer behind the mouth, therefore can on an instrument, finish the measurement of pressure and flow simultaneously, eliminated the influence of test technology to a certain extent, for the geology exploitation provides formation parameter accurately to data interpretation.
Claims (1)
1. stratified static pressure combination tool for water injection well, comprise switch (1), pressure sensor (6,7), flow transmitter (8), it is characterized in that: switch (1) one side has inlet (3) and bottom to be connected with the differential pressure flow meter that upper channel (5) are arranged (12) by internal thread; Upper channel (5) top is equipped with water nozzle (4), and the middle part is equipped with pressure sensor (7) behind pressure sensor (6) before the mouth, flow transmitter (8), the mouth successively; Differential pressure flow meter (12) bottom is connected with the delivery locator (16) that lower channel (9) is arranged by overcoat (13); Delivering locator (16) side has the side limb (10) that has liquid outlet (11), and middle part, bottom are equipped with locating detent (14), guide grab (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101373719A CN101397905B (en) | 2008-10-23 | 2008-10-23 | Stratified static pressure combination tool for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101373719A CN101397905B (en) | 2008-10-23 | 2008-10-23 | Stratified static pressure combination tool for water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101397905A CN101397905A (en) | 2009-04-01 |
| CN101397905B true CN101397905B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101373719A Active CN101397905B (en) | 2008-10-23 | 2008-10-23 | Stratified static pressure combination tool for water injection well |
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| Country | Link |
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| CN (1) | CN101397905B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031967B (en) * | 2009-09-25 | 2015-03-18 | 贵州航天凯山石油仪器有限公司 | Layered flow test method and flow regulator used in same |
| CN102996115B (en) * | 2012-11-28 | 2015-07-15 | 西安思坦仪器股份有限公司 | Direct-reading examining seal instrument suitable for eccentric water distributor |
| CN107237623B (en) * | 2017-03-15 | 2024-02-23 | 上海嘉地仪器有限公司 | Span pressure measuring instrument for oil field |
| CN114856548A (en) * | 2022-05-20 | 2022-08-05 | 西南石油大学 | Chemical flooding pressure-dividing well layering pressure measuring device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2410418Y (en) * | 2000-02-23 | 2000-12-13 | 张庆滨 | Static pressure eccentric tester joint for water injection well |
| CN2577251Y (en) * | 2002-11-07 | 2003-10-01 | 马冬兰 | Storage type flow meter for water-filling well |
| CN1560431A (en) * | 2004-03-05 | 2005-01-05 | 婷 尹 | Method of bridge type eccentric pouring water layering pressure testing |
-
2008
- 2008-10-23 CN CN2008101373719A patent/CN101397905B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2410418Y (en) * | 2000-02-23 | 2000-12-13 | 张庆滨 | Static pressure eccentric tester joint for water injection well |
| CN2577251Y (en) * | 2002-11-07 | 2003-10-01 | 马冬兰 | Storage type flow meter for water-filling well |
| CN1560431A (en) * | 2004-03-05 | 2005-01-05 | 婷 尹 | Method of bridge type eccentric pouring water layering pressure testing |
Non-Patent Citations (1)
| Title |
|---|
| 马建国."多分层试井技术的研究".《油气井测试》.1999,第8卷(第4期),32-35. |
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| CN101397905A (en) | 2009-04-01 |
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Effective date of registration: 20220114 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee after: Daqing Oilfield Co.,Ltd. Patentee after: PetroChina Co Ltd Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee before: Daqing Oilfield Co.,Ltd. |
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