CN203905909U - Deep-well adjustable low-density fluid fast liquid discharge well testing device - Google Patents
Deep-well adjustable low-density fluid fast liquid discharge well testing device Download PDFInfo
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- CN203905909U CN203905909U CN201420233779.7U CN201420233779U CN203905909U CN 203905909 U CN203905909 U CN 203905909U CN 201420233779 U CN201420233779 U CN 201420233779U CN 203905909 U CN203905909 U CN 203905909U
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Abstract
The utility model provides a deep-well adjustable low-density fluid fast liquid discharge well testing device. In order to overcome the defect of low construction operation efficiency since the existing well testing technology cannot meet the gas well and deep layer liquid discharge requirement, a liquid storage tank, a first pump truck and a low-density fluid mixing system of a liquid supply system of the deep-well adjustable low-density fluid fast liquid discharge well testing device are sequentially communicated through pipelines; the low-density fluid mixing system is also communicated with a device for preparing nitrogen from air; an output pipeline of the low-density fluid mixing system is communicated with an underground liquid inlet passage through a liquid supply pipeline; and an underground liquid outlet passage is communicated with a liquid storage tank of a liquid outlet system through a liquid outlet pipeline. The deep-well adjustable low-density fluid fast liquid discharge well testing device has the beneficial effects that the structure is reasonable; the maximum negative pressure in a well shaft can be formed through regulating the liquid density in the well shaft; and the goal of carrying out great-pressure-difference liquid discharge on a deep well is realized.
Description
Technical field
The utility model relates to a kind of deep-well quick fluid-discharge formation testing technology, especially relates to the adjustable low density flow quick fluid-discharge of a kind of deep-well formation testing device.
Background technology
Formation testing is to utilize a set of special equipment and instrument, down-hole oil gas is directly tested, to obtain discharge opeing about oil gas production capacity, pressure, temperature and oil, the gas of layer, the activities of water sample physical characterization data.The existing developing history for many years of formation testing (test) technology, its technology is relatively ripe, and conventional formation testing (test) technology is at present: underbalance perforating is surveyed build-up of fluid and asked product, well-flushing to ask for fluidity; Also adopt simple formation testing or perforation-test bigeminy to do.Discharge opeing measure is mostly vaporize water and falls liquid level, conventionally adopts NAVI pump, screw pump or hydraulic pump etc. to carry out discharge opeing.Even if the formation test tool of application of advanced, can obtain good oil-gas Layer data, but can not realize continuously a large amount of discharge opeings.
In order to shorten construction period, to improve work operations efficiency, the various research application of making tubing string are one of current topmost measures, also be the trend of formation testing technological development, formation testing technology mainly contains the bigeminy work of perforation and formation tester and NAVI and MFE, TCP tri-and makes formation testing technology.But the certain limitation that above-mentioned several formation testing method all has for the discharge opeing of gas well and deep layer.
Utility model content
In order to overcome existing formation testing technology, can not meet the discharge opeing demand of gas well and deep layer, cause the deficiency of construction operation inefficiency, the utility model provides the adjustable low density flow quick fluid-discharge of a kind of deep-well formation testing device.
The utility model solves the technical scheme that its technical problem adopts: deep-well is adjustable, and low density flow quick fluid-discharge formation testing device comprises ground assembly and down-hole formation testing process pipe string, down-hole formation testing process pipe string is positioned at production casing, and more than 2 or 2 gas lift valve, screen casing, the perforating systems of down-hole formation testing process pipe string from top to bottom connect successively by oil pipe; Gas lift valve is from top to bottom opened pressure and is increased successively; Perforating system comprises mechanical. points duration and degree of heating, perforating gun, plug from top to bottom successively; Down-hole feed pathway is the annular space of production casing and down-hole formation testing process pipe string, and down-hole liquid outlet channel is the endoporus of down-hole formation testing process pipe string.
Ground assembly comprises liquid-supplying system and liquid outlet system.
The fluid reservoir of liquid-supplying system, pump truck I, low density flow mixing system are communicated with successively by pipeline, and low density flow mixing system is also communicated with air nitrogen-making device; The export pipeline of low density flow mixing system is communicated with down-hole feed pathway by feed flow pipeline.Down-hole liquid outlet channel is communicated with the fluid reservoir of liquid outlet system by fluid pipeline.
Liquid outlet system fluid reservoir is composed in series by fluid reservoir II and fluid reservoir I.Fluid reservoir I is communicated with oil truck, and fluid reservoir II is communicated with pump truck II.The export pipeline of pump truck II is communicated with the fluid reservoir of liquid-supplying system.
On feed flow pipeline, fluid pipeline, valve is installed.
The beneficial effects of the utility model are that rational in infrastructure, the negative pressure by maximum in the fluid density formation pit shaft in adjustment pit shaft, realizes the object that deep-well is carried out to large pressure reduction discharge opeing; Employing nitrogen is mixed, safe and reliable; Realized large pressure reduction continuous draining in well.
Accompanying drawing explanation
Fig. 1 is the adjustable low density flow quick fluid-discharge of the utility model deep-well formation testing apparatus structure schematic diagram.
In figure: 1. gas lift valve I, 2. oil pipe, 3. gas lift valve II, 4. gas lift valve III, 5. screen casing, 6. mechanical. points duration and degree of heating, 7. perforating gun, 8. plug, 9. fluid reservoir, 10. pump truck I, 11. air nitrogen-making devices, 12. low density flow mixing systems, 13. fluid reservoir II, 14. fluid reservoir I, 15. pump truck II, 16. oil trucks, 17. production casings, 18. down-hole formation testing process pipe strings, 19. feed flow pipelines, 20. fluid pipelines, 21. liquid-supplying systems, 22. liquid outlet systems.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.But those skilled in the art should know, the utility model is not limited to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to accompanying drawing 1.The utility model deep-well is adjustable, and low density flow quick fluid-discharge formation testing device mainly comprises ground assembly and down-hole formation testing process pipe string 18.
Down-hole formation testing process pipe string 18 is positioned at production casing 17.
More than 2 or 2 gas lift valve, screen casing 5, the perforating systems of down-hole formation testing process pipe string 18 from top to bottom connect successively by oil pipe 2.Gas lift valve is from top to bottom opened pressure and is increased successively.Perforating system comprises mechanical. points duration and degree of heating 6, perforating gun 7, plug 8 from top to bottom successively.Being generally oil pipe 2, gas lift valve I 1, oil pipe 2, gas lift valve II 3, oil pipe 2, gas lift valve III 4, oil pipe 2, screen casing 5, oil pipe 2, perforating system connects successively.
Down-hole feed pathway is the annular space of production casing 17 and down-hole formation testing process pipe string 18, and down-hole liquid outlet channel is the endoporus of down-hole formation testing process pipe string 18.
Ground assembly mainly comprises liquid-supplying system 21 and liquid outlet system 22.
The fluid reservoir 9 that liquid-supplying system 21 mainly comprises, pump truck I 10, low density flow mixing system 12 and air nitrogen-making device 11.Fluid reservoir 9, pump truck I 10, low density flow mixing system 12 are communicated with successively by pipeline; Low density flow mixing system 12 is also communicated with air nitrogen-making device 11.
The export pipeline of low density flow mixing system 12 is communicated with down-hole feed pathway by feed flow pipeline 19.Down-hole liquid outlet channel is communicated with the fluid reservoir of liquid outlet system 22 by fluid pipeline 20.
The fluid reservoir of liquid outlet system 22 is composed in series by fluid reservoir II 13 and fluid reservoir I 14.Fluid reservoir I 14 is communicated with oil truck 16; Fluid reservoir II 13 is communicated with pump truck II 15.The export pipeline of pump truck II 15 is communicated with the fluid reservoir 9 of liquid-supplying system 21.
According to construction operation needs, on feed flow pipeline 19, fluid pipeline 20, a plurality of valves are installed.
Utilize the oil test operation method of the adjustable low density flow quick fluid-discharge of the utility model deep-well formation testing device:
First, Installation and Debugging formation testing device, is lowered to down-hole formation testing process pipe string 18 in the production casing 17 of pit shaft;
Then, the liquid-supplying system 21 of installation ground assembly and liquid outlet system 22, and be communicated with down-hole formation testing process pipe string 18;
Oil test operation step is as follows:
A, well head caber are pounded and are hit mechanical. points duration and degree of heating 6 on perforating gun, carry out perforation, open oil reservoir oil discharge passage;
B, startup ground assembly system, the down-hole feed pathway that the liquid-supplying system 21 of ground assembly consists of to the annular space by production casing 17 and down-hole formation testing process pipe string 18 feed flow pipeline 19 is carried low density liquid, opens successively gas lift valve from top to bottom;
Gas liquid ratio in C, adjustment pit shaft, reduces fluid density in pit shaft and, to design load, the liquid of feed pathway in pit shaft is entered to liquid outlet channel by screen casing 5, and liquid is upwards expelled to the liquid outlet system 22 of ground assembly;
Product is asked in D, the large tank metering in ground, asks for the production capacity data on stratum.
In pit shaft, fluid density adjusting range is 1.0～0.2g/cm3.
The specific embodiment is:
Air nitrogen-making device 11 outlets of liquid-supplying system 21 adopt oil pipe to connect with low density flow mixing system 12; The inlet line of pump truck I 10 is connected with fluid reservoir 9, and outlet line connects with low density flow mixing system 12.
Fluid reservoir II 14 one end of liquid outlet system 22 connect with oil truck 16 by flexible pipe, and the other end is connected with fluid reservoir I 13 hard tube lines, adopt hard tube line to connect between fluid reservoir II 13, fluid reservoir I 14.One end of fluid reservoir II 13 connects with fluid reservoir I 14, and the other end connects with pump truck II 15.Pump truck II 15 adopts hard pipeline to connect with fluid reservoir 9.
In clear water in fluid reservoir 9, add special-purpose frother, by pump truck I 10, squeeze into low density flow mixing system 12, and after fully mixing with the pure nitrogen gas of air nitrogen-making device 11 generations, anti-circulation is squeezed in well, then carries out anti-gaslift, gas lift valve (gas lift valve I 1, gas lift valve II 3, gas lift valve III 4 ...) from top to bottom opened successively, low density flow enters shaft bottom, and hydrops in pit shaft is discharged.By controlling the gas-liquid of liquid in pit shaft, recently adjust the density of liquid in pit shaft, conventionally in pit shaft, fluid density can be adjusted between 1.0～0.2g/cm3, with this, in pit shaft, set up Efficient Cycle, by the reduction of fluid density in pit shaft, realize and increase bottom hole pressure difference induced flow discharge opeing.
The liquid of discharging in pit shaft returns out ground from oil pipe and enters fluid reservoir II 13, fluid reservoir I 14, fluid reservoir II 13, the mutual UNICOM of fluid reservoir I 14, the oil returning out is asked and is entered oil truck 16 postpartum through metering, by oil truck 16, pulled away, remaining water, through being squeezed in the fluid reservoir 9 of liquid-supplying system 21 and recycled by pump truck II 15 after froth breaking precipitation, forms a complete circulating system.
The utility model is mainly the changeability of utilizing fluid density, on-the-spot by ground low density flow mixing system generation pure nitrogen gas, mix with clear water, frother, additive, dynamically adjust well liquid bulk density, set up accordingly Efficient Cycle in pit shaft, the reduction by density can realize and increase bottom hole pressure difference induced flow de-plugging, clean oil reservoir, shaft bottom hydrops is discharged fast, ask for the true production capacity in stratum, reach the object of abrupt test.Particularly, in the formation testing test and exploitation of Deep Well of Low Pressure Oil/gas Well and gas condensate field, can effectively solve the shaft bottom hydrops problem of Oil/gas Well.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.
Claims (2)
1. the adjustable low density flow quick fluid-discharge of a deep-well formation testing device, comprise ground assembly and down-hole formation testing process pipe string, down-hole formation testing process pipe string is positioned at production casing, and more than 2 or 2 gas lift valve, screen casing, the perforating systems of down-hole formation testing process pipe string from top to bottom connect successively by oil pipe; Gas lift valve is from top to bottom opened pressure and is increased successively; Perforating system comprises mechanical. points duration and degree of heating, perforating gun, plug from top to bottom successively; Down-hole feed pathway is the annular space of production casing and down-hole formation testing process pipe string, and down-hole liquid outlet channel is the endoporus of down-hole formation testing process pipe string, it is characterized in that:
Described ground assembly comprises liquid-supplying system (21) and liquid outlet system (22);
The fluid reservoir (9) of described liquid-supplying system (21), pump truck I (10), low density flow mixing system (12) are communicated with successively by pipeline, and described low density flow mixing system (12) is also communicated with air nitrogen-making device (11); The export pipeline of low density flow mixing system (12) is communicated with down-hole feed pathway by feed flow pipeline (19);
Described down-hole liquid outlet channel is communicated with the fluid reservoir of liquid outlet system (22) by fluid pipeline (20);
The fluid reservoir of described liquid outlet system (22) is composed in series by fluid reservoir II (13) and fluid reservoir I (14), described fluid reservoir I (14) is communicated with oil truck (16), and described fluid reservoir II (13) is communicated with pump truck II (15);
The export pipeline of described pump truck II (15) is communicated with the fluid reservoir (9) of liquid-supplying system (21).
2. the adjustable low density flow quick fluid-discharge of deep-well formation testing device according to claim 1, is characterized in that: described feed flow pipeline (19), fluid pipeline are provided with valve on (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233779.7U CN203905909U (en) | 2014-05-08 | 2014-05-08 | Deep-well adjustable low-density fluid fast liquid discharge well testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233779.7U CN203905909U (en) | 2014-05-08 | 2014-05-08 | Deep-well adjustable low-density fluid fast liquid discharge well testing device |
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| CN203905909U true CN203905909U (en) | 2014-10-29 |
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| CN201420233779.7U Withdrawn - After Issue CN203905909U (en) | 2014-05-08 | 2014-05-08 | Deep-well adjustable low-density fluid fast liquid discharge well testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790916A (en) * | 2015-04-24 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN105089567A (en) * | 2014-05-08 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Adjustable quick liquid discharging and oil testing device for low-density fluid in deep well and operating method of adjustable quick liquid discharging and oil testing device |
-
2014
- 2014-05-08 CN CN201420233779.7U patent/CN203905909U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089567A (en) * | 2014-05-08 | 2015-11-25 | 天津大港油田钻采技术开发公司 | Adjustable quick liquid discharging and oil testing device for low-density fluid in deep well and operating method of adjustable quick liquid discharging and oil testing device |
| CN105089567B (en) * | 2014-05-08 | 2018-01-05 | 天津大港油田钻采技术开发公司 | Deep-well is adjustable low density flow quick fluid-discharge formation testing device and its operational method |
| CN104790916A (en) * | 2015-04-24 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN104790916B (en) * | 2015-04-24 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20180105 |