CN102102503A - Sand prevention method for four-inch small hole - Google Patents
Sand prevention method for four-inch small hole Download PDFInfo
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- CN102102503A CN102102503A CN2010105993807A CN201010599380A CN102102503A CN 102102503 A CN102102503 A CN 102102503A CN 2010105993807 A CN2010105993807 A CN 2010105993807A CN 201010599380 A CN201010599380 A CN 201010599380A CN 102102503 A CN102102503 A CN 102102503A
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Abstract
The invention belongs to the technical field of oil and gas exploration and particularly relates to a sand prevention method for a four-inch small hole, by which the problem of sand production of an oil and gas well with the four-inch small hole is solved by a chemical and mechanical composite sand prevention process. The method is implemented by the following steps of: (1) descending a gauge cutter of the four-inch small hole to the designed depth; (2) descending a pipe scraper of the four-inch small hole to scrape the well, and after the well is scraped, backwashing the well with hot water for 2 to 4 weeks; (3) filling a resin sand pipe column; (4) filling a high-pressure well mouth, connecting a pipeline and filling resin sand; (5) deepening an oil pipe and washing sand to an artificial bottom of the well; (6) descending a mechanical sand prevention pipe column of the four-inch small hole; and (7) compacting the ground to realize packer sealing and releasing, wherein the mechanical sand prevention pipe column forms a well completion pipe column. The impact of airflow and bottom pressure on a manual well wall can be effectively eliminated, the letting-in drift diameter meets the requirement of post sand washing, a multistage sand prevention barrier of an artificial borehole wall and a screen pipe is formed, and the sand prevention effect is good.
Description
Technical field
The invention belongs to the oil-gas mining technical field, relate in particular to a kind of 4 inch slim-hole anti-sand methods that use chemical-mechanical composite sand prevention technology to solve 4 inch slim-hole sand production of oil-gas wells difficult problems.
Background technology
Along with exploit for a long time in the oil field, problems such as sleeve pipe damages, oil reservoir caves in, shakes out inevitably appear in oil well, and the serious part oil well that will cause stops production.For saving cost, reproduce the oil well that this type of situation occurs, the mode that the Liaohe Oil Field has taked to beat sidetracked hole realizes secondary recovery, but after taking the sidetracking mode, in the oil exploitation process, reappears the problem of shaking out again, has seriously restricted follow-up exploitation work.The 4 inch slim hole wells problem of shaking out is generally taked artificial borehole wall sand control technique sand control after solving sidetracking at present, but this technology exists the sand control life short in following four class wells, problems such as sand controlling result difference:
1, in gas well,, cause the sand control life short because of high pressure draught is strong to the artificial borehole wall scouring capability;
2, in the higher oil well of strata pressure, elevated pressures easily makes artificial borehole wall cave in to the impact of artificial borehole wall, loses the sand control barrier;
3, the stratum pulping has a strong impact on artificial borehole wall intensity, reduces sand controlling result;
4, Shallow Oil-Gas well, because formation temperature is low, the artificial borehole wall solidification effect is poor, the sand control life is short.
Summary of the invention
The present invention is intended to overcome the prior art weak point and provides a kind of and can effectively eliminate air-flow and bottom pressure impacts artificial borehole wall, stay the well latus rectum to satisfy later stage sand washing requirement, formed the multistage sand block barrier of artificial borehole wall-screen casing, the 4 inch slim-hole anti-sand methods that sand controlling result is good.
For achieving the above object, the present invention is achieved in that
A kind of 4 inch slim-hole anti-sand methods is characterized in that, implement as follows:
(1) 4 inch slim-hole drift size gauge tool driftings are to projected depth under;
(2) 4 inch slim-hole pipeline scrapers are scraped well down, scrape the back and use hot water 2～4 weeks of anti-flushing well;
(3) retrofilling resin sand tubing string;
(4) dress high-pressure well mouth, connecting line carries out the construction of casting resin sand;
(5) deepen the oil pipe sand washing to the artificial bottom of a well;
(6) 4 inch slim-hole mechanical sand control tubing strings under;
(7) ground is suppressed, and realizes the seat envelope, gives up, and forms completion tubular column by the mechanical sand control tubing string in well.
As a kind of preferred version, 4 inch slim-hole mechanical sand control tubing strings of the present invention comprise starting taper, the first no box cupling sand control pipe, the first no box cupling blind pipe, first safety joint, the second no box cupling sand control pipe, the second no box cupling blind pipe, second safety joint, slim-hole suspension arrangement and the oil pipe that continues successively and fixedly connect.
As another kind of preferred version, the of the present invention first no box cupling sand control pipe and the second no box cupling sand control pipe adopt no box cupling sand control screen respectively.
The invention has the beneficial effects as follows: this technology has adopted 4 inch slim-hole chemical-mechanical composite sand prevention technologies, air-flow can be eliminated effectively and bottom pressure impacts artificial borehole wall, solve the low difficult problem of artificial borehole wall low-temperature setting intensity, realize administering the serious oil well of 4 inch slim-hole gas wells, oil well, pulping that strata pressure is high and the function of shallow-layer sand production.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is 4 inch slim-hole mechanical sand control tubular column structure schematic diagrames of the present invention.
Among the figure: 1 is starting taper; 2 is the first no box cupling sand control pipe; 3 is the first no box cupling blind pipe; 4 is first safety joint; 5 is the second no box cupling sand control pipe; 6 is the second no box cupling blind pipe; 7 is second safety joint; 8 is the slim-hole suspension arrangement; 9 is oil pipe; 10 is casing hanger; 11 is the artificial bottom of a well.
The specific embodiment
Present 4 inch slim-holes shake out to administer does not have other effective ways, the inventor further studies at this type of well sand control technique, develop a kind of 4 inch slim-hole hangers, form the mechanical sand control structure, propose 4 inch slim-hole chemical-mechanical composite sand prevention thinkings, earlier at oil reservoir position casting resin sand, after the curing, be lowered to the mechanical sand control structure, realize the chemical-mechanical composite sand prevention, prolong the sand control life, solve behind the sidetracking the 4 inch slim-holes difficult problem of shaking out.
Referring to shown in Figure 1,4 inch slim-hole anti-sand methods, can implement as follows:
(1) 4 inch slim-hole drift size gauge tool driftings are to projected depth under;
(2) 4 inch slim-hole pipeline scrapers are scraped well down, scrape the back and use hot water 2～4 weeks of anti-flushing well;
(3) retrofilling resin sand tubing string;
(4) dress high-pressure well mouth, connecting line carries out the construction of casting resin sand;
(5) deepen the oil pipe sand washing to the artificial bottom of a well;
(6) 4 inch slim-hole mechanical sand control tubing strings under; Described 4 inch slim-hole mechanical sand control tubing strings comprise starting taper 1, first no box cupling sand control pipe 2, the first no box cupling blind pipe 3, first safety joint, 4, second no box cupling sand control pipe 5, the second no box cupling blind pipe 6, second safety joint 7, slim-hole suspension arrangement 8 and the oil pipe 9 that continues successively and fixedly connect; The described first no box cupling sand control pipe 2 and the second no box cupling sand control pipe 5 adopt no box cupling sand control screen respectively.(7) ground is suppressed, and eight grades of power cylinder work realize the seat envelope, give up, and form completion tubular column by 4 inch slim-hole hangers in the mechanical sand control tubing string, the first no box cupling sand control screen and the second no box cupling sand control screen in well.
Concrete implementation step of the present invention is as follows:
1, brings up to, wash kill-job, trip out tubing string in the well;
2, sand washing: following sand clean out pipe is visited the sand face, have sand then sand washing to the artificial bottom of a well;
3, drifting: following φ 80mm drift size gauge tool drifting;
4, pipe cleaning: following Φ 93mm spring pipeline scraper is scraped well, with hot water two weeks of anti-flushing well;
5, dress high-pressure well mouth;
6, ground plane pipeline, and pressure testing 25.0MPa, voltage stabilizing 3min do not sting and do not leak for qualified;
7, sand control construction: forehand prepad fluid at first, discharge capacity is 2.1m
3/ min takes the sand ratio and is controlled at about 15% when adding sand, it is intact to add sand, by design forehand displacement fluid;
8, sand washing: closing well solidifies, and directly deepens oil pipe and visits the sand face, and sand washing is to the artificial bottom of a well;
9, following 4 inch slim-hole mechanical sand control tubing strings: φ 73mm and φ 60.3mm combined string tail band nib; It is followed successively by from bottom to top: starting taper+(φ 73mm) the first no box cupling screen casing 3m+ (φ 73mm) the first no box cupling blind pipe 3m+ first safety joint+(φ 73mm) the second no box cupling screen casing 3m+ (φ 73mm) the second no box cupling blind pipe 5m+ second safety joint+(φ 80mm) slim-hole suspension arrangement 6m+ (φ 60.3mm) oil pipe+(φ 73mm) oil pipe;
11, seat envelope, give up: in oil pipe, drop into ∮ 25mm steel ball, suppress the seat envelope, suppress to the 17MPa bust be zero, finish the seat envelope and give up;
12, flow string production down.
Be with being appreciated that, more than about specific descriptions of the present invention, only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (3)
1. an inch slim-hole anti-sand method is characterized in that, implements as follows:
(1) 4 inch slim-hole drift size gauge tool driftings are to projected depth under;
(2) 4 inch slim-hole pipeline scrapers are scraped well down, scrape the back and use hot water 2～4 weeks of anti-flushing well;
(3) retrofilling resin sand tubing string;
(4) dress high-pressure well mouth, connecting line carries out the construction of casting resin sand;
(5) deepen the oil pipe sand washing to the artificial bottom of a well;
(6) 4 inch slim-hole mechanical sand control tubing strings under;
(7) ground is suppressed, and realizes the seat envelope, gives up, and forms completion tubular column by the mechanical sand control tubing string in well.
2. 4 inch slim-hole anti-sand methods according to claim 1 is characterized in that: described 4 inch slim-hole mechanical sand control tubing strings comprise starting taper (1), the first no box cupling sand control pipe (2), the first no box cupling blind pipe (3), first safety joint (4), the second no box cupling sand control pipe (5), the second no box cupling blind pipe (6), second safety joint (7), slim-hole suspension arrangement (8) and the oil pipe (9) that continues successively and fixedly connect.
3. 4 inch slim-hole anti-sand methods according to claim 1 is characterized in that: the described first no box cupling sand control pipe (2) and the second no box cupling sand control pipe (5) adopt no box cupling sand control screen respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105993807A CN102102503A (en) | 2010-12-22 | 2010-12-22 | Sand prevention method for four-inch small hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105993807A CN102102503A (en) | 2010-12-22 | 2010-12-22 | Sand prevention method for four-inch small hole |
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| CN102102503A true CN102102503A (en) | 2011-06-22 |
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| CN2010105993807A Pending CN102102503A (en) | 2010-12-22 | 2010-12-22 | Sand prevention method for four-inch small hole |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213857A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Coiled tubing anti-drop tubing gauge device and technological method |
| CN104533354A (en) * | 2014-12-31 | 2015-04-22 | 大港油田集团有限责任公司 | Plug type sand control method for slim hole sidetracked well |
| CN105569626A (en) * | 2014-10-11 | 2016-05-11 | 中国石油天然气股份有限公司 | Oil well fracturing sand prevention method |
| CN105863557A (en) * | 2016-04-28 | 2016-08-17 | 重庆科技学院 | Three-dimensional deep-formation compound sand control method for oil and gas well |
| CN106522897A (en) * | 2016-12-22 | 2017-03-22 | 天津冠力博石油科技有限公司 | Expandable sand screen device capable of controlling sand removal granularity |
| CN107939358A (en) * | 2017-11-28 | 2018-04-20 | 中国石油化工股份有限公司 | Carbonate rock hydrocarbon reservoir open hole completion tubing string and post-processing method |
| CN116378600A (en) * | 2023-06-06 | 2023-07-04 | 新疆能通能原石油工程有限公司 | Oil layer reconstruction plugging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046988C (en) * | 1995-10-18 | 1999-12-01 | 辽河石油勘探局钻采工艺研究院 | Artificial well-wall sand-proof technology for steam-injection thermal-recovery well of viscous crude oil |
| CN2391008Y (en) * | 1998-08-14 | 2000-08-09 | 胜利石油管理局无杆采油泵公司 | Sandproof pipe with pump |
| CN1279336A (en) * | 2000-05-12 | 2001-01-10 | 辽河石油勘探局曙光工程技术处 | Artificial well wall of oil well for preventing sand |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
-
2010
- 2010-12-22 CN CN2010105993807A patent/CN102102503A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046988C (en) * | 1995-10-18 | 1999-12-01 | 辽河石油勘探局钻采工艺研究院 | Artificial well-wall sand-proof technology for steam-injection thermal-recovery well of viscous crude oil |
| CN2391008Y (en) * | 1998-08-14 | 2000-08-09 | 胜利石油管理局无杆采油泵公司 | Sandproof pipe with pump |
| CN1279336A (en) * | 2000-05-12 | 2001-01-10 | 辽河石油勘探局曙光工程技术处 | Artificial well wall of oil well for preventing sand |
| CN101787854A (en) * | 2010-03-03 | 2010-07-28 | 西南石油大学 | Subsection well completion system of bottom water reservoir horizontal well |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213857A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Coiled tubing anti-drop tubing gauge device and technological method |
| CN104213857B (en) * | 2013-06-05 | 2016-06-08 | 中国石油天然气股份有限公司 | Coiled tubing anti-drop tubing gauge device and technological method |
| CN105569626A (en) * | 2014-10-11 | 2016-05-11 | 中国石油天然气股份有限公司 | Oil well fracturing sand prevention method |
| CN105569626B (en) * | 2014-10-11 | 2018-01-05 | 中国石油天然气股份有限公司 | Oil well fracturing sand prevention method |
| CN104533354A (en) * | 2014-12-31 | 2015-04-22 | 大港油田集团有限责任公司 | Plug type sand control method for slim hole sidetracked well |
| CN104533354B (en) * | 2014-12-31 | 2017-02-22 | 大港油田集团有限责任公司 | Plug type sand control method for slim hole sidetracked well |
| CN105863557A (en) * | 2016-04-28 | 2016-08-17 | 重庆科技学院 | Three-dimensional deep-formation compound sand control method for oil and gas well |
| CN105863557B (en) * | 2016-04-28 | 2019-04-16 | 重庆科技学院 | Oil/gas well solid deep layer composite sand prevention method |
| CN106522897A (en) * | 2016-12-22 | 2017-03-22 | 天津冠力博石油科技有限公司 | Expandable sand screen device capable of controlling sand removal granularity |
| CN107939358A (en) * | 2017-11-28 | 2018-04-20 | 中国石油化工股份有限公司 | Carbonate rock hydrocarbon reservoir open hole completion tubing string and post-processing method |
| CN116378600A (en) * | 2023-06-06 | 2023-07-04 | 新疆能通能原石油工程有限公司 | Oil layer reconstruction plugging method |
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Application publication date: 20110622 |