CN113374470A - Production testing pipe column for thermal production well and thermal production well testing process - Google Patents
Production testing pipe column for thermal production well and thermal production well testing process Download PDFInfo
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- CN113374470A CN113374470A CN202110667997.6A CN202110667997A CN113374470A CN 113374470 A CN113374470 A CN 113374470A CN 202110667997 A CN202110667997 A CN 202110667997A CN 113374470 A CN113374470 A CN 113374470A
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- 238000012360 testing method Methods 0.000 title claims abstract description 245
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 196
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 238000009826 distribution Methods 0.000 claims abstract description 25
- 210000000078 claw Anatomy 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 114
- 239000010779 crude oil Substances 0.000 claims description 21
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 66
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000013475 authorization Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a production test pipe column for a thermal production well and a thermal production well test process, wherein a channel for oil liquid, steam and a test device to pass through is arranged in the production test pipe column, a sealing part which is positioned between two adjacent oil production layers to seal an oil sleeve annulus when in use is arranged on the production test pipe column, the production test pipe column comprises at least two pipe column units which are sequentially connected from top to bottom and are respectively corresponding to the oil production layers, each pipe column unit comprises a test working barrel, an eccentric oil inlet valve and a steam distribution valve which are arranged along the up-down direction, the test working barrel is positioned above the corresponding eccentric oil inlet valve and the corresponding steam distribution valve, the test working barrel is provided with a sealing inner wall which is used for being in sealing fit with the sealing sections of the temperature and pressure testing device and the layered production testing device so as to separate two adjacent oil production layers, and the inner wall of the test working barrel is also provided with an annular groove for supporting the supporting claws of the temperature and pressure testing device and the layered production testing device.
Description
Technical Field
The invention relates to a production test pipe column for a thermal production well and a thermal production well test process.
Background
Currently, when a thermal production well is subjected to a layered test, the temperature and pressure of each oil production layer before steam injection, the steam suction condition in the steam injection process (such as the temperature, pressure, dryness, flow and the like of downhole steam), the temperature and pressure of each oil production layer after steam injection and soaking, and the production state parameters of crude oil in the production process (such as the temperature, pressure, flow and water content of the crude oil) are generally required to be tested. In the prior art, a production string and a test string are two sets of independent equipment, the production string needs to be lifted before testing, and the test string with a temperature and pressure testing device is put into a casing pipe for temperature and pressure testing; then, putting the production string into a test string to inject steam and soak the well, putting the production string into the test string with a steam suction condition test device to test the steam suction condition; and then, the production string is put forward, and the test string is put into the production string to carry out temperature and pressure test, so that on one hand, the operation cost is continuously increased due to frequent tripping of the string, and on the other hand, the original oil well downhole production state can be damaged due to frequent tripping of the string liquid, the interference of downhole follow current is brought, the test result is influenced to a certain extent, and the test string is difficult to be directly used for guiding the oil well production. Moreover, the layered test in the prior art cannot test the production state of the crude oil in the production process in real time.
Disclosure of Invention
The invention aims to provide a production test tubular column for a thermal production well, which aims to solve the technical problems of complex operation and higher cost caused by frequent tripping of the tubular column in the prior art; the thermal production well testing process is also provided to accurately test all parameters of the thermal production well.
In order to achieve the purpose, the technical scheme of the production test pipe column for the thermal production well is as follows: a production test pipe column for a thermal production well is provided with a passage for oil supply liquid, steam and a test device to pass through, a sealing part is arranged on the production test pipe column and is positioned between two adjacent oil production layers to seal the annular space of an oil sleeve when in use, the production test pipe column comprises at least two pipe column units which are sequentially connected from top to bottom and are respectively corresponding to each oil production layer, each pipe column unit comprises a test working barrel, an eccentric oil inlet valve and a steam distribution valve which are arranged along the up-down direction, the test working barrel is positioned above the corresponding eccentric oil inlet valve and the corresponding steam distribution valve, the test working barrel is provided with a sealing inner wall which is used for being in sealing fit with the sealing sections of the temperature and pressure testing device and the layered production testing device so as to separate two adjacent oil production layers, and the inner wall of the test working barrel is also provided with an annular groove for supporting the supporting claws of the temperature and pressure testing device and the layered production testing device.
The invention has the beneficial effects that: in the production test tubular column for the thermal production well, after the test working barrel is arranged, the temperature and pressure test device and the production test device can be hermetically hung on the production test tubular column, two adjacent oil production layers are separated, and layered tests can be carried out without mutual influence. Compared with the mode of frequently tripping the tubular column in the prior art, the invention only adopts one production test tubular column and is matched with a related test device, can realize the test of each parameter and the subsequent production without lifting the tubular column, does not need to frequently trip the tubular column, has simple operation and reduces the operation cost.
The technical scheme of the thermal production well testing process is as follows: a thermal production well testing process comprising the steps of: 1) opening each stage of steam distribution valve; 2) the temperature and pressure testing device is lowered to a set position of the pipe column, so that a supporting claw in the temperature and pressure testing device is supported in an annular groove of a corresponding testing working barrel, a sealing section in the temperature and pressure testing device seals the corresponding testing working barrel to separate oil production layers, and temperature and pressure of each oil production layer are measured before steam injection; 3) taking out the temperature and pressure testing device, putting the steam suction condition testing device in the pipe column, and testing the temperature, pressure, dryness and flow of the underground steam in the steam injection process; 4) taking out the steam absorption condition testing device, and repeating the step 2), testing the temperature and pressure of each oil production layer after steam injection; 5) and taking out the temperature and pressure testing device, and putting the production testing device into the tubular column, so that a supporting claw of the production testing device is supported in an annular groove of the test working barrel, and a corresponding sealing section in the production testing device plugs the corresponding test working barrel in the production testing tubular column, so as to test the temperature, pressure, flow and water content of crude oil in the oil production layer to be tested in the production process.
The invention has the beneficial effects that: in the thermal production well testing process provided by the invention, after the testing working barrel is arranged, the temperature and pressure testing device and the attitude testing device can be hermetically hung on the testing working barrel, two adjacent oil production layers are separated, and layered testing can be carried out without mutual influence. Compared with the mode of frequently tripping the tubular column in the prior art, the invention only adopts one production test tubular column and is matched with a related test instrument, can realize the test of each parameter and the subsequent production without lifting the tubular column, does not need to frequently trip the tubular column, has simple operation and reduces the operation cost.
Further, in the step 5), if the oil production layer to be tested is the lowest oil production layer, the sealing section of the attitude testing device plugs the testing working barrel corresponding to the oil production layer to be tested, and the corresponding attitude tester tests the temperature, pressure, flow and water content of the crude oil in the oil production layer to be tested; and if a lower oil production layer is arranged below the oil production layer to be detected, adopting a state testing device with at least two sealing sections and at least two state testers to enable the at least two sealing sections to respectively plug testing working cylinders corresponding to the oil production layer to be detected and the lower oil production layer, enabling the at least two state testers to respectively test parameters of crude oil of the lower oil production layer and the crude oil mixed with the lower oil production layer and the oil production layer to be detected, and then performing parameter operation to obtain each state parameter of the crude oil in the oil production layer to be detected.
The method has the effect that the number of the production state testers and the number of the sealing sections are further limited aiming at different positions of the oil production layer to be tested. For the oil extraction layer to be tested with the oil extraction layer below, the crude oil parameters of the oil extraction layer to be tested with the lower oil extraction layer below are calculated in a parameter operation mode, two sets of relatively independent liquid passing channels do not need to be independently arranged in the tubular column, and the structures of the tubular column and the testing device are simplified.
Drawings
FIG. 1 is a schematic diagram of a thermal production well testing process example 1 of the present invention for drilling a hollow bridge plug;
FIG. 2 is a schematic view of a thermal production well testing process example 1 of the present invention when the installation of a tubular column is completed and no production is performed;
FIG. 3 is a schematic view of a thermal production well testing process of example 1 of the present invention after a sucker rod is lowered into the tubing string;
FIG. 4 is a cross-sectional view of a test mandrel used in example 1 of the thermal well testing process of the present invention;
FIG. 5 is a schematic diagram of a temperature and pressure testing apparatus in example 1 of a thermal production well testing process of the present invention;
FIG. 6 is a schematic view of a steam suction condition testing apparatus in example 1 of the thermal production well testing process of the present invention;
FIG. 7 is a schematic view of a production testing apparatus in example 1 of a thermal well testing process of the present invention;
fig. 8 is a schematic view of a temperature and pressure testing device and a hanging section matched with a production testing instrument in thermal production well testing process embodiment 1 of the present invention;
fig. 9 is a schematic diagram of a thermal production well testing process example 2 of the present invention after completion of installation of a tubular column;
description of reference numerals: 1-upper oil production layer; 2-middle oil production layer; 3-lower oil production layer; 4-artificial well bottom; 5-a bottom ball seat; 6-ball blocking cover; 7-lower steam distribution valve; 8-lower eccentric oil inlet valve; 9-testing the working barrel; 10-a flat tubing; 11-hollow bridge plugs; 12-a sleeve; 13-a connecting tube; 14-cannula seal; 15-a central eccentric oil inlet valve; 16-middle test mandrel; 17-a packer; 18-upper distributing valve; 19-upper eccentric oil inlet valve; 20-mounting a testing working barrel; 21-a thick liquid pump; 22-telescoping tubes; 23-middle steam distribution valve; 24-a sucker rod; 25-upper joint; 26-lower joint; 27-an annular groove; 28-sealing the tube section; 29-a first cord cap head; 30-a pressure gauge; 31-a thermometer; 32-a first seal segment; 33-a pressure thermometer; 34-a first lifting section; 35-a first weight bar; 36-a second cord cap head; 37-four parameter high temperature tester; 38-second weighted lever; 39-third cord cap head; 40-a parturition tester; 41-a second seal section; 42-oil inlet; 43-a second lifting section; 44-a third weight bar; 45-cam; 46-a support jaw; 47-upper oil production layer; 48-lower oil production layer; 49-test working barrel; 50-upper eccentric oil inlet valve; 51-upper steam distribution valve; 52-a packer; 53-lower test mandrel; 54-lower eccentric oil inlet valve; 55-lower steam distribution valve.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 8, a specific embodiment 1 of the thermal production well testing process of the present invention is described by taking three oil production layers as an example, wherein the three oil production layers are an upper oil production layer 1, a middle oil production layer 2 and a lower oil production layer 3. The tubular column adopted by the thermal production well testing process is integrated with steam injection, testing and production, and comprises an upper section part and a lower section part which are hermetically inserted.
As shown in fig. 1 and 2, the lower section part comprises a flat oil pipe 10 with a diameter of 88.9mm, a hollow bridge plug 11 with a diameter of 7 ″ is connected above the flat oil pipe 10, a lower testing working barrel, a lower eccentric oil inlet valve 8, a lower steam distribution valve 7, a ball blocking cover 6 and a bottom ball seat 5 are sequentially arranged below the flat oil pipe 10 from top to bottom, and all the parts are directly connected or connected through pipe fittings.
The upper section part of the pipe column comprises two extension pipes 22, a thick oil pump 21, an upper testing working barrel 20, an upper eccentric oil inlet valve 19, an upper steam distribution valve 18, a middle testing working barrel 16, a middle eccentric oil inlet valve 15, a middle steam distribution valve 23 and an insertion pipe sealer 14 which are sequentially connected from top to bottom, and all the parts are directly connected or connected through pipe fittings. Wherein, the upper testing working barrel 20, the upper eccentric oil inlet valve 19 and the upper steam distribution valve 18 correspond to the upper oil production layer 1, the middle testing working barrel 16, the middle eccentric oil inlet valve 15 and the middle steam distribution valve 23 correspond to the middle oil production layer 2, and the lower testing working barrel 9, the lower eccentric oil inlet valve 8 and the lower steam distribution valve 7 correspond to the lower oil production layer 3.
The upper test working barrel 20, the middle test working barrel 16 and the lower test working barrel 9 are identical in structure, as shown in fig. 4, the upper end of the test working barrel is an upper connector 25 with a female buckle, the lower end of the test working barrel is a lower connector 26 with a male buckle, the upper connector 25 and the lower connector 26 are connected through a barrel body, the inner wall of the upper section of the barrel body can be in sealing fit with the sealing section of a test instrument to form a sealing pipe section 28, the inner wall of the lower section of the barrel body is provided with an annular groove 27, and the wall of the annular groove 27 can upwards support the test instrument matched with a pipe column. The upper end of seal tube section 28 is flared to guide the test instrument into seal tube section 28.
As shown in fig. 5, the temperature and pressure testing device used with a pipe column is a schematic diagram, and the temperature and pressure testing device comprises a first rope cap head 29, a pressure gauge 30, a thermometer 31, a first sealing section 32, a pressure thermometer 33, a first hanging section 34 and a first weighting rod 35 which are sequentially arranged from top to bottom, wherein the first rope cap head 29, the pressure gauge 30, the thermometer 31 and the pressure thermometer 33 all adopt commercially available parts, as shown in fig. 5, a plurality of sealing rings are arranged outside the first sealing section 32, and the first sealing section 32 can be in sealing fit with the inner wall of the sealing pipe section 28 in the testing working barrel to separate two adjacent oil production layers. The temperature and pressure testing device provided in the embodiment can increase the number of the sealing sections and the specific tester according to the number of the oil production layers aiming at the condition of two oil production layers. In this embodiment, the first seal segment 32 is a solid structure.
As shown in fig. 6, which is a schematic view of a steam suction condition testing device used in cooperation with a pipe column, the steam suction condition testing device includes a second rope cap head 36, a four-parameter high temperature tester 37 and a second weighting rod 38, which are sequentially arranged from top to bottom, wherein the structure of the second rope cap head 36 is consistent with that of the first rope cap head 29, and both the second rope cap head and the first rope cap head can be purchased in the market. The four-parameter high-temperature tester 37 comprises a temperature measuring element, a load measuring element, a steam dryness testing element and a flow testing element, the four-parameter high-temperature tester 37 can adopt a four-parameter logging instrument in the Chinese invention patent application with the application publication number of CN1258806A, and the four-parameter high-temperature tester 37 can test the underground temperature, pressure, dryness and flow in the steam injection process in real time. In the steam injection process, all layers are communicated, so that only one set of four-parameter high-temperature tester 37 needs to be arranged, and in the steam injection test process, only the steam suction condition testing device needs to be hung underground, all layers do not need to be separated, and a sealing section does not need to be arranged on the steam suction condition testing device.
As shown in fig. 7, the schematic diagram of the special test apparatus used with the column is shown, the special test apparatus includes a third rope cap 39, a special test instrument 40, a second sealing section 41, a second hanging section 43, and a third weighting rod 44, which are sequentially arranged from top to bottom, wherein the special test instrument 40 includes a temperature measuring element, a pressure measuring element, a moisture content element, and a flow element, and the special test instrument 40 can adopt a multi-parameter test instrument in the chinese utility model patent with the authorization notice number CN 205689196U. The structure of the second sealing section 41 is consistent with that of the first sealing section 32, and a plurality of sealing rings are arranged outside the second sealing section. In this embodiment, the second sealing section 41 is a hollow structure, a radial oil inlet 42 is formed in a hollow pipe body between the second sealing section 41 and the second hanging section 43, a flow passage is formed in the product shape tester 40, the pipe body connecting the product shape tester 40 and the second sealing section 41 is a hollow structure, the pipe body connecting the product shape tester 40 and the third cap rope head 39 is also a hollow structure, and an oil outlet (not shown in the drawing) is formed in the hollow pipe body between the product shape tester 40 and the third cap rope head 39, so that crude oil below the second sealing section 41 can flow out of the oil outlet through the hollow flow passage through the oil inlet 42.
In this embodiment, the first hanging section 34 and the second hanging section 43 have the same structure, as shown in fig. 8, the hanging section is provided with a cam 45 and a supporting claw 46, the cam 45 is connected with the supporting claw 46 in a transmission manner, when the cam 45 turns downwards, the two supporting claws 46 can be opened, the structure of the part is the prior art, and reference can be specifically made to the chinese utility model patent with the authorization publication number of CN2424296Y and the chinese utility model patent with the authorization publication number of CN 203961959U. Of course, in other embodiments, the supporting jaw may be opened and retracted electrically, and specifically, the chinese patent application with application publication No. CN101403297A may be referred to.
The thermal production well testing process comprises the following steps (in the embodiment, the occurrence test of the lower oil production layer 3 is taken as an example for explanation):
1. pulling out the original well pipe column;
2. a drift hole gauge with the diameter of 154mm is drilled to the artificial well bottom 4, and the technical condition of the casing pipe 12 is checked;
3. scraping the lower GX178T scraper to the bottom of the artificial well, and washing the well with large discharge hot water while scraping until the quality of water at an inlet and an outlet is consistent;
4. through the hollow bridge plug 11 of 7' below the connecting pipe 13, after the lower steam distribution valve 7 is plugged by throwing balls, the hydraulic pressure is 5MPa, 10MPa and 15MPa, the pressure is stabilized for 5 minutes respectively, the seat sealing and anchoring of the hollow bridge plug 11 is completed, the pressure is continuously increased by 20MPa, the lower steam distribution valve 7 is opened, the lower steam distribution valve 7 is made to fall to the bottom ball seat 5, and the connecting pipe 13 is lifted up after the pressure is released to complete the releasing;
5. the upper section part is inserted into the sleeve 12, the insert pipe sealer 14 is inserted into the hollow bridge plug 11, and the original phi 65mm upper flange of the wellhead is replaced by a phi 80mm upper flange;
6. a phi 25mm steel ball is put into the upper section part, and is connected and pressed, the pressing pressures are 5MPa, 10MPa and 15MPa, and the pressure is stabilized for 5 minutes respectively, so that the setting and anchoring of the packer 17 of the Y241-152 type are completed;
7. raising the pressure of the pump truck to 20Mpa, opening a middle steam distribution valve 23, throwing a phi 32mm steel ball into the upper section part, pressurizing to 10Mpa, opening an upper steam distribution valve 18, completing the running of the whole production test pipe column, and installing a wellhead and a Christmas tree;
8. a steel wire test vehicle is used for setting a temperature and pressure test device in a production test pipe column from a well mouth, a first sealing section 32 in the temperature and pressure test device is in sealing fit with a sealing pipe section 28 in a test working barrel, oil production layers are separated, a well is closed for 3 days, the temperature and pressure test device is taken out after the test is finished, and the pressure and the temperature of each oil production layer before steam injection are measured;
9. steam is injected in a layered mode, a steam suction condition testing device is put into a production testing pipe column from a wellhead by a steel wire testing vehicle in the layered steam injection process, the production testing pipe column is suspended in the production testing pipe column, and the production testing pipe column is taken out after the test is finished;
10. after soaking and open flow, a steel wire test vehicle enters a temperature and pressure test device from a wellhead, and the pressure and the temperature of each oil production layer after steam injection are tested; then, a steel wire test vehicle is used for putting a production test device into the production test pipe column from a well mouth, a second sealing section 41 in the production test device is matched and sealed with a sealing pipe section 28 in a lower test working barrel 9, a steel wire rope is taken out from a third rope cap head 39, a sucker rod 24 is put down for production, crude oil in a lower oil production layer 3 enters from an oil inlet 42 and flows out from an oil outlet after passing through a production test instrument 40, the production test instrument 40 tests the production parameters of the crude oil, the production test instrument 40 in the embodiment is a storage type production test instrument, the sucker rod 24 is taken out after the whole test period is finished, and the production test device is taken out;
11. and (4) setting a sucker rod 24 and a plunger, improving the anti-impact distance, and completing the well after the trial pumping is qualified.
In this embodiment, the hollow bridge plug 11 and the packer 17 both constitute the packing, and the lower section constitutes the lowermost string unit. The inner wall of the seal tube segment 28 forms the inner seal wall.
The attitude testing device in this embodiment is provided with only one attitude tester 40, and can perform attitude testing on the oil production layer to be tested at the lowermost layer, or can simultaneously test parameters of crude oil mixed in each oil production layer below the attitude tester 40. The birth shape testing device constitutes the birth shape testing device. However, for example, when it is desired to perform the attitude test on the middle oil production layer 2, an additional lower attitude test device is required, the lower attitude test device tests the attitude parameters of the lower oil production layer 3, the upper attitude test device tests the attitude parameters of the crude oil mixed with the lower oil production layer 3 and the middle oil production layer 2, and the attitude parameters of the crude oil in the middle oil production layer 2 can be obtained through a series of calculations. In this case, the two production test devices constitute a production test device, or in other embodiments, two sets of seal segments and production testers may be arranged on the same pipe body.
In the specific embodiment 2 of the thermal production well testing process of the present invention, as shown in fig. 9, only the upper oil production layer 47 and the lower oil production layer 48 are arranged in this embodiment, a hollow bridge plug is not additionally arranged in this embodiment, a packer 52 for separating the upper oil production layer 47 and the lower oil production layer 48 is arranged outside the production testing string, the production testing string is sequentially provided with an upper testing working barrel 49, an upper eccentric oil inlet valve 50, an upper steam distribution valve 51, a lower testing working barrel 53, a lower eccentric oil inlet valve 54 and a lower steam distribution valve 55 from top to bottom, the structure of the production testing string is the same as that in embodiment 1, and the specific testing process is also the same as that in the above embodiment.
In the above embodiment, the oil production layer to be tested is not limited to a single-layer oil production layer, and the mixed crude oil of two oil production layers can be tested simultaneously.
According to the specific embodiment of the production test string for the thermal production well, the structure of the production test string is the same as that in the embodiment, and the content is not repeated.
Claims (3)
1. A production test tubular column for a thermal production well is characterized in that: the production test pipe column is internally provided with a channel through which oil supply liquid, steam and a test device pass, a sealing part which is positioned between two adjacent oil production layers to seal the annular space of an oil sleeve during use is arranged on the production test pipe column, the production test pipe column comprises at least two pipe column units which are sequentially connected from top to bottom and are used for respectively corresponding to the oil production layers, each pipe column unit comprises a test working barrel, an eccentric oil inlet valve and a steam distribution valve which are arranged along the up-down direction, the test working barrel is positioned above the corresponding eccentric oil inlet valve and the steam distribution valve, the test working barrel is provided with a sealing inner wall which is used for being in sealing fit with a sealing section of the temperature pressure test device and the layered production test device to separate the two adjacent oil production layers, and the inner wall of the test working barrel is also provided with a supporting claw for the temperature pressure test device and the layered production test device to support the annular groove.
2. A thermal production well testing process using the production test string for a thermal production well of claim 1, wherein: the method comprises the following steps: 1) opening each stage of steam distribution valve; 2) the temperature and pressure testing device is lowered to a set position of the pipe column, so that a supporting claw in the temperature and pressure testing device is supported in an annular groove of a corresponding testing working barrel, a sealing section in the temperature and pressure testing device seals the corresponding testing working barrel to separate oil production layers, and temperature and pressure of each oil production layer are measured before steam injection; 3) taking out the temperature and pressure testing device, putting the steam suction condition testing device in the pipe column, and testing the temperature, pressure, dryness and flow of the underground steam in the steam injection process; 4) taking out the steam absorption condition testing device, and repeating the step 2), testing the temperature and pressure of each oil production layer after steam injection; 5) and taking out the temperature and pressure testing device, and putting the production testing device into the tubular column, so that a supporting claw of the production testing device is supported in an annular groove of the test working barrel, and a corresponding sealing section in the production testing device plugs the corresponding test working barrel in the production testing tubular column, so as to test the temperature, pressure, flow and water content of crude oil in the oil production layer to be tested in the production process.
3. The thermal production well testing process of claim 2, wherein: in the step 5), if the oil production layer to be tested is the lowest oil production layer, the sealing section of the attitude testing device plugs the testing working barrel corresponding to the oil production layer to be tested, and the corresponding attitude tester tests the temperature, pressure, flow and water content of the crude oil in the oil production layer to be tested; and if a lower oil production layer is arranged below the oil production layer to be detected, adopting a state testing device with at least two sealing sections and at least two state testers to enable the at least two sealing sections to respectively plug testing working cylinders corresponding to the oil production layer to be detected and the lower oil production layer, enabling the at least two state testers to respectively test parameters of crude oil of the lower oil production layer and the crude oil mixed with the lower oil production layer and the oil production layer to be detected, and then performing parameter operation to obtain each state parameter of the crude oil in the oil production layer to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667997.6A CN113374470B (en) | 2021-06-16 | 2021-06-16 | Production test tubular column for thermal production well and thermal production well test process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667997.6A CN113374470B (en) | 2021-06-16 | 2021-06-16 | Production test tubular column for thermal production well and thermal production well test process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113374470A true CN113374470A (en) | 2021-09-10 |
| CN113374470B CN113374470B (en) | 2024-06-07 |
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| CN1263978A (en) * | 2000-03-10 | 2000-08-23 | 大庆油田有限责任公司 | Bridge type eccentric testing, injection and production device |
| CN2538961Y (en) * | 2002-02-07 | 2003-03-05 | 王晓斌 | Multi-parameter dynamic layered tester |
| CN103114843A (en) * | 2013-02-18 | 2013-05-22 | 中国石油天然气股份有限公司 | Multi-layer multi-section continuous oil testing system without lifting tubular column and operation method thereof |
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| CN113374470B (en) | 2024-06-07 |
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