CN110792411A - Double-dissolving definite-quantity blockage-removing production-increasing technology - Google Patents
Double-dissolving definite-quantity blockage-removing production-increasing technology Download PDFInfo
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- CN110792411A CN110792411A CN201911144930.3A CN201911144930A CN110792411A CN 110792411 A CN110792411 A CN 110792411A CN 201911144930 A CN201911144930 A CN 201911144930A CN 110792411 A CN110792411 A CN 110792411A
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- Prior art keywords
- oil
- blockage
- dissolving
- smooth
- scale
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- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000004090 dissolution Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 229940079593 drug Drugs 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 27
- 239000001993 wax Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011978 dissolution method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001365958 Ceroplastes cirripediformis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- 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
- E21B37/00—Methods or apparatus for cleaning 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A 'double-dissolving definite' blockage removal and yield increase technology relates to the technical field of oil-water wells; it comprises the following steps: the drug dissolving method adopts high-efficiency environment-friendly agents, oil wax and scale dissolution to achieve the aim of cleaning, and simultaneously forms a layer of protective film on the surface, so that a pipe column, a downhole tool and equipment are not corroded; the hot dissolving method adopts a high-frequency electromagnetic dissolving-assisting instrument, high-temperature and high-heat-conductivity energy to dissolve thick oil, dead oil and wax blocks, and liberate blocked channels, so that a shaft is clean and smooth; according to a certain method, a precise over-capacity scale remover is adopted, the special liquid medicine is precisely positioned and released to a scale spot, the scales at a water distributor and a water nozzle are deeply cleaned, and smooth throwing and fishing or measuring and matching are realized. The double-solution-fixed blockage removal and yield increase technology can effectively solve the problems of stratum blockage, shaft pipe wall blockage and ground pipeline blockage, achieves the comprehensive effects of smooth oil flow channel, smooth and accurate data recording, and realizes yield increase, efficiency increase, energy conservation and consumption reduction.
Description
Technical Field
The invention relates to the technical field of oil-water wells, in particular to a 'double-dissolving certain' blockage removal and yield increase technology.
Background
After years of development of oil fields, the oil fields enter the later stage of development, newly discovered oil reservoirs are relatively poor in oil layer quality, and the oil layers are mostly poor in oil quality, the oil layers are subjected to pump detection and pipe detection operation, and implementation of various measures (profile control, profile control and flooding, chemical blockage removal, acidification, fracturing, CO2, microbial flooding and the like) causes great damage to strata and fluid channels, the seepage capability of the strata is reduced, the oil-water flow resistance of a shaft and a ground pipeline is increased, the yield of an oil well is reduced, the injection capability of a water well is reduced, the pipeline is blocked or blocked, the management difficulty is increased, and the maintenance cost is increased. The first hand data (such as logging, testing, allocating and pressure recovery) can not be accurately recorded in time, and the oil field development effect is seriously influenced.
Disclosure of Invention
The invention aims to provide a 'double-solution-fixed' blockage removal and yield increase technology aiming at the defects and shortcomings of the prior art, which can effectively solve the problems of stratum blockage, shaft pipe wall blockage and ground pipeline blockage, and achieves the comprehensive effects of smooth oil flow channel, smooth and accurate data recording, yield increase, efficiency increase, energy conservation and consumption reduction.
In order to achieve the purpose, the invention adopts the technical scheme that: the double-dissolving definite blockage removing and production increasing technology comprises the following steps:
1. the drug dissolving method adopts high-efficiency environment-friendly agents, oil wax and scale dissolution to achieve the aim of cleaning, and simultaneously forms a layer of protective film on the surface, so that a pipe column, a downhole tool and equipment are not corroded;
2. the hot dissolving method adopts a high-frequency electromagnetic dissolving-assisting instrument, high-temperature and high-heat-conductivity energy to dissolve thick oil, dead oil and wax blocks, and liberate blocked channels, so that a shaft is clean and smooth;
3. according to a certain method, a precise over-capacity scale remover is adopted, the special liquid medicine is precisely positioned and released to a scale spot, the scales at a water distributor and a water nozzle are deeply cleaned, and smooth throwing and fishing or measuring and matching are realized.
The realization principle of the invention is as follows: high heat energy and high-efficiency medicaments are combined to form flow state of shaft oil wax; the comprehensive blockage removing technology for removing the blocked points at fixed points by using special liquid medicine comprises a composite formula technology, a mechanical blockage removing technology and a chemical blockage removing technology, and can be used for removing the blockage by using a single formula or by matching more than two types of blockage removing technologies. The chemical blockage removal is utilized, namely, the environment-friendly chemical agents with various formulas are suitable for different types of stratum blockage; mechanical blockage removal, namely removing blockage by using a thermosol instrument and the like; composite blockage removal: the blockage is removed by a double-dissolution method, namely, the blockage is removed by hot dissolution and drug dissolution at the same time.
The invention has the following beneficial effects: the double-solution-fixed blockage removal and yield increase technology can effectively solve the problems of stratum blockage, shaft pipe wall blockage and ground pipeline blockage, achieves the comprehensive effects of smooth oil flow channel, smooth and accurate data recording, and realizes yield increase, efficiency increase, energy conservation and consumption reduction.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the above technical solutions will be described in detail below.
Example 1
And (3) performing open flow production in the middle oil production well in the AI at the north of the H301 fault block in 2018 after fracturing the AI at 8 months, wherein daily liquid production is 21t and daily oil production is 2t during normal open flow. In 2019, 2, 11 days, due to serious wax deposition, a pipe column is blocked, the produced liquid is reduced to about 3t from 20t, a boiler is not communicated after being stabbed and washed for one half hour, no liquid is produced after 18 days in 3 months, the shut-in oil pressure is 0, and the casing pressure is 11 MPa; the operation in 2019 in the 6 th month is performed to remove the blockage, the pipe column cannot be started after being lifted for 2 meters and cannot be lowered.
The blockage removing method comprises the following steps:
1. putting a high-frequency electromagnetic dissolution assisting instrument into the oil pipe by using a mechanical hot-melting technology, and dissolving and releasing the thick oil wax block in the oil pipe at high temperature (matching with liquid medicine);
2. and injecting a high-efficiency dissolving and releasing agent into the annular space of the casing to dissolve thick oil wax blocks, and cleaning the shaft to recover the normal production of the self-injection of the oil well.
Example 2
Wax removal and blockage removal by a Z10-71 screw pump well drug dissolution method:
the efficient dissolving and releasing agent cleaning and unblocking technology is used for dissolving blockage of thick oil wax blocks and the like in a tubular column, cleaning a shaft, reducing the back pressure of a ground pipeline and obtaining more accurate working fluid level data and formation pressure recovery data.
The implementation results are as follows:
a. the back pressure is reduced to 0.55MPa (0.7 MPa before construction), and the pressure is reduced by 0.15 MPa;
b. after the blockage removal and paraffin removal, the oil production amount of the oil well is increased, the oil production amount is increased (from 1.4 tons to 2.4 tons), and the oil is increased by 1 ton per day.
c. After the 36-prescription liquid is injected into a well bore, diluted crude oil is finally discharged, and the pollution of the near-well area is cleaned.
Example 3
Aiming at heavy oil wells and high wax content wells, serious blockage of ground pipelines and high back pressure, a double-solvent certain composite blockage removal cleaning technology is adopted, the back pressure is reduced, and the current is reduced. And a better effect is obtained.
The back pressure of all the wells is reduced to different degrees by applying the back pressure reducing measure of 9 wells in a certain oil production plant together, and the maximum back pressure reduction amplitude is 3.44 MPa.
The innovative matching technology of 'double-dissolving certain' blockage removal and efficiency enhancement of the oil-water well discloses the overall appearance and mechanism of oil-gas-water flowing in the whole process of the oil-water well from a stratum-shaft-ground gathering and transportation system, and separation and blockage of dirt such as wax scale and the like in a channel. And a complete set of complete 'double-dissolving definite' blockage removing composite matched technology series is developed in a targeted way. The whole process of stratum, shaft and ground can be unblocked and cleaned. Realizing the yield increase, efficiency increase, energy saving and consumption reduction.
1. After the stratum is unblocked and cleaned, the yield can be effectively increased, the injection can be increased, and because the stratum is cleaned, the stratum pressure recovery data can be really and effectively measured, and the logging of the residual oil is more practical.
2. After the shaft is unblocked and cleaned, the accurate production and suction profile, measurement and matching and pressure measurement can be smoothly measured.
3. The ground pipeline is unblocked and clean, can reduce back pressure, reduce electric current, energy saving and consumption reduction.
The innovation achievement of the technology is tested by time and practice, market tests are popularized for four years, plugging removal construction of more than 200 wells is achieved, and the success rate reaches 91%.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
- A 'double-dissolving definite' blockage removal and production increase technology is characterized by comprising the following steps:(1) the method adopts efficient environment-friendly agents, oil-soluble wax and scale dissolution to achieve the aim of cleaning, and simultaneously forms a layer of protective film on the surface without corroding tubular columns, underground tools and equipment;(2) the thermal dissolving method adopts a high-frequency electromagnetic dissolving-assisting instrument, high-temperature and high-heat-conductivity energy to dissolve thick oil, dead oil and wax blocks, liberate blocked channels and ensure that a shaft is clean and smooth;(3) and a certain method adopts a precise over-capacity scale remover, precisely positions and releases the special liquid medicine to a scale spot, deeply cleans the scale at the water distributor and the water nozzle, and realizes smooth throwing and fishing or measuring and matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144930.3A CN110792411A (en) | 2019-11-21 | 2019-11-21 | Double-dissolving definite-quantity blockage-removing production-increasing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144930.3A CN110792411A (en) | 2019-11-21 | 2019-11-21 | Double-dissolving definite-quantity blockage-removing production-increasing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110792411A true CN110792411A (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911144930.3A Pending CN110792411A (en) | 2019-11-21 | 2019-11-21 | Double-dissolving definite-quantity blockage-removing production-increasing technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN110792411A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200958388Y (en) * | 2006-10-12 | 2007-10-10 | 邓亚东 | Arbitrary-layer chemical feeder |
| CN101353955A (en) * | 2008-08-20 | 2009-01-28 | 王宗廷 | Method for manufacturing chemical paraffin cleaner |
| CN104948134A (en) * | 2015-06-30 | 2015-09-30 | 安东柏林石油科技（北京）有限公司 | Storage-type precise quantitative oil-gas well down-hole work agent injection system and injection method |
| US20180142532A1 (en) * | 2016-11-21 | 2018-05-24 | Weatherford Technology Holdings, Llc | Chemical injection valve with stem bypass flow |
| CN207485432U (en) * | 2017-09-20 | 2018-06-12 | 河间市科信油田技术服务有限公司 | Downhole instrument and underground work system |
-
2019
- 2019-11-21 CN CN201911144930.3A patent/CN110792411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200958388Y (en) * | 2006-10-12 | 2007-10-10 | 邓亚东 | Arbitrary-layer chemical feeder |
| CN101353955A (en) * | 2008-08-20 | 2009-01-28 | 王宗廷 | Method for manufacturing chemical paraffin cleaner |
| CN104948134A (en) * | 2015-06-30 | 2015-09-30 | 安东柏林石油科技（北京）有限公司 | Storage-type precise quantitative oil-gas well down-hole work agent injection system and injection method |
| US20180142532A1 (en) * | 2016-11-21 | 2018-05-24 | Weatherford Technology Holdings, Llc | Chemical injection valve with stem bypass flow |
| CN207485432U (en) * | 2017-09-20 | 2018-06-12 | 河间市科信油田技术服务有限公司 | Downhole instrument and underground work system |
Non-Patent Citations (1)
| Title |
|---|
| 采招网 HTTPS://WWW.BIDCENTER.COM.CN/NEWSCONTENT-66391704-1.HTML: "《"双溶一定法"解阻清洁设备租赁招标公告》", 4 March 2019 * |
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| PB01 | Publication | ||
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Application publication date: 20200214 |