CN110566186A - Method for measuring open blockage encountering and blocking position in two-stage well cementation operation - Google Patents
Method for measuring open blockage encountering and blocking position in two-stage well cementation operation Download PDFInfo
- Publication number
- CN110566186A CN110566186A CN201910907163.0A CN201910907163A CN110566186A CN 110566186 A CN110566186 A CN 110566186A CN 201910907163 A CN201910907163 A CN 201910907163A CN 110566186 A CN110566186 A CN 110566186A
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- China
- Prior art keywords
- opening
- well cementation
- plug
- open
- blockage
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- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000903 blocking effect Effects 0.000 title abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000004568 cement Substances 0.000 claims description 9
- 201000004569 Blindness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a method for measuring an open blockage encountering and blocking position in two-stage well cementation operation, which comprises the following steps of: 1) after the first-stage well cementation construction is finished, releasing the pressure to 0MPa, and checking whether the backflow is normal or not; 2) releasing the opening plug; 3) connecting the conversion device to a logging cable, then connecting 1-2 5-inch drill rods, lowering the device at the speed of 50 m/min, and judging the position of the open plug meeting the blockage through the tension of the cable; 4) when the measuring instrument reaches the position of the grading hoop, the opening plug is impacted at the speed of 60 m/min, so that the opening plug is completely seated in the opening sleeve of the grading hoop; 5) then the drill rod is pulled out at the speed of 80 m/min; 6) and (5) the pressure is suppressed to the opening pressure of the grading hoop, so that the circulation hole of the grading hoop is opened, and circulation is established to prepare for second-stage well cementation operation. The invention can determine and judge the position of the opening plug more quickly, and can open the graded collar circulation hole quickly, ensure the normal operation of the second-level cementing operation and effectively improve the construction safety.
Description
Technical Field
The invention relates to the field of petroleum well cementation industry, in particular to a method for measuring an open jam encountering and blocking position in two-stage well cementation operation.
background
In the well cementation operation, because of the characteristics of stratum pressure, long sealing section and the existence of a plurality of pressure systems in the same open hole, a graded well cementation and completion process is required, and strict requirements are provided for the safety and quality of well cementation construction. However, in the conventional two-stage well cementation, the release opening plug is adopted to descend through free fall, and after a certain time, whether the opening plug falls into the opening sleeve of the grading hoop is judged, and the grading hoop circulation hole is opened in a pressure-holding mode so as to carry out two-stage well cementation operation. The process has the disadvantages that after the waiting time is exceeded, the pressure cannot be held, the outlet returns, and the position of the opening plug cannot be determined under the condition, so that the grading hoop cannot be opened, and the secondary well cementation operation cannot be finished. Mainly expressed in the following aspects:
1. When the grading hoop opening plug falls, the grading hoop opening plug is blocked and cannot continue to descend, the grading hoop opening sleeve cannot be timely put into practice, and the position of the blockage cannot be judged.
2. The drilling fluid is poor in stability, the opening plug cannot be completely seated in the opening sleeve due to the fact that sediment is accumulated on the step of the graded hoop opening sleeve, the opening plug is communicated up and down, a pressure transmission channel exists, and the whole sleeve is in a communicated state.
disclosure of Invention
The invention aims to solve the technical problems and provides a method for measuring the position of an open plug in a two-stage well cementation operation.
in order to solve the technical problems, the invention adopts the following technical scheme:
a method for measuring an open jam encountering blockage position in a two-stage cementing operation comprises the following steps:
1) After the first-stage well cementation construction is finished, releasing the pressure to 0MPa, and checking whether the backflow is normal or not;
2) opening the cement head top cover, and releasing the opening plug from the top of the cement head;
3) connecting the conversion device to a logging cable, then connecting 1-2 5-inch drill pipes, lowering the device at the speed of 50 m/min, and judging the position of the open plug when encountering the blockage through the tension of the cable;
4) When the measuring instrument reaches the position of the grading hoop, the opening plug is impacted at the speed of 60 m/min, so that the opening plug is completely seated in the opening sleeve of the grading hoop;
5) then the drill rod is pulled out at the speed of 80 m/min, and then a cement head top cover is installed;
6) and (5) the pressure is suppressed to the opening pressure of the grading hoop, so that the circulation hole of the grading hoop is opened, and circulation is established to prepare for second-stage well cementation operation.
the invention has the beneficial effects that:
On the basis of the traditional well cementation process, the invention connects 1-2 drill rods of 5 inches after connecting the conversion device through the logging cable, can measure the position of the open plug meeting the blockage according to the tension change of the cable, and ensures that the open plug is completely seated in the open sleeve by lifting and lowering the cable to impact, thereby overcoming the defects of the traditional well cementation process and providing a set of construction process with high construction safety and guaranteed construction process.
the invention can determine and judge the position of the opening plug more quickly, effectively solves the construction blindness and uncertainty factors, can open the graded collar circulation hole quickly, ensures the normal operation of the second-stage cementing operation, and can effectively improve the construction safety.
Detailed Description
the invention is described in further detail below:
the invention discloses a method for measuring an open blockage encountering and blocking position in two-stage well cementation operation, which comprises the following steps of:
1) after the first-stage well cementation construction is finished, releasing the pressure to 0MPa, and checking whether the backflow is normal or not;
2) opening the cement head top cover, and releasing the opening plug from the top of the cement head;
3) Connecting a conversion device to a logging cable, then connecting 1-2 5-inch drill rods, putting down at the speed of 50 m/min, judging the midway blocking condition of the opening plug according to the tension change of the cable, and measuring the position of the opening plug, wherein the conversion device is characterized by being capable of judging whether the opening plug completely reaches the position of a grading hoop; specifically, the open jam encounter position is reflected according to the tension change of the cable and the depth displayed in the measuring instrument;
4) when the measuring instrument reaches the position of the grading hoop, the opening plug is impacted at the speed of 60 m/min, so that the opening plug is completely seated in the opening sleeve of the grading hoop;
5) then the drill rod is pulled out at the speed of 80 m/min, and then a cement head top cover is installed;
6) and (5) the pressure is suppressed to the opening pressure of the grading hoop, so that the circulation hole of the grading hoop is opened, and circulation is established to prepare for second-stage well cementation operation.
In the 5-outlet 244.5mm two-stage well cementation operation finished in the xx oil field abroad in 2018, the method and the construction process for measuring the open blockage encountering position in the two-stage well cementation operation are adopted, wherein the open blockage encountering position is measured in the middle of 2 wells, the problem is timely solved through the process, and the smooth operation of the two-stage well cementation operation is greatly guaranteed; in addition, the construction time of the 3 wells is greatly shortened, and the smooth opening of the grading hoops is ensured; as shown in table 1.
TABLE 1 xx oilfield two-stage cementing operation data sheet
during construction, the method for measuring the position of the open plug in the two-stage well cementation operation and the construction steps are strictly carried out, whether the open plug falls into the grading hoop open sleeve or not can be rapidly judged, the grading hoop circulating hole is opened in time, circulation is established, and the normal operation of the two-stage well cementation operation is ensured.
In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (1)
1. A method for measuring an open jam encountering blockage position in a two-stage cementing operation is characterized by comprising the following steps of:
1) After the first-stage well cementation construction is finished, releasing the pressure to 0MPa, and checking whether the backflow is normal or not;
2) opening the cement head top cover, and releasing the opening plug from the top of the cement head;
3) Connecting the conversion device to a logging cable, then connecting 1-2 5-inch drill pipes, lowering the device at the speed of 50 m/min, and judging the position of the open plug when encountering the blockage through the tension of the cable;
4) When the measuring instrument reaches the position of the grading hoop, the opening plug is impacted at the speed of 60 m/min, so that the opening plug is completely seated in the opening sleeve of the grading hoop;
5) then the drill rod is pulled out at the speed of 80 m/min, and then a cement head top cover is installed;
6) And (5) the pressure is suppressed to the opening pressure of the grading hoop, so that the circulation hole of the grading hoop is opened, and circulation is established to prepare for second-stage well cementation operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907163.0A CN110566186A (en) | 2019-09-24 | 2019-09-24 | Method for measuring open blockage encountering and blocking position in two-stage well cementation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907163.0A CN110566186A (en) | 2019-09-24 | 2019-09-24 | Method for measuring open blockage encountering and blocking position in two-stage well cementation operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566186A true CN110566186A (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910907163.0A Pending CN110566186A (en) | 2019-09-24 | 2019-09-24 | Method for measuring open blockage encountering and blocking position in two-stage well cementation operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566186A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898322A (en) * | 2021-11-16 | 2022-01-07 | 成都百胜野牛科技有限公司 | Natural gas well fluid separator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2883666Y (en) * | 2005-09-30 | 2007-03-28 | 中国石化中原油气高新股份有限公司采油四厂 | Operation soft dredger |
| CN204532240U (en) * | 2015-04-09 | 2015-08-05 | 中国石油集团渤海钻探工程有限公司 | A kind of full-bore sizing collar |
| CN104818959A (en) * | 2015-04-08 | 2015-08-05 | 天津德瑞克石油工具有限公司 | Adjustable classification hoop for well cementation casing running |
| CN104989319A (en) * | 2015-05-26 | 2015-10-21 | 成都高普石油工程技术有限公司 | Cementing method based on continuous cementing mode in petroleum exploration |
| US20170342800A1 (en) * | 2016-05-27 | 2017-11-30 | Packers Plus Energy Services Inc. | Wellbore stage tool with redundant closing sleeves |
| CN109505561A (en) * | 2018-12-06 | 2019-03-22 | 盐城市森鑫石油机械有限公司 | Oil field flood suction and oil flow production exploitation repeated on-off valve and its working method |
| CN109779566A (en) * | 2019-01-08 | 2019-05-21 | 青岛海蚨奥工贸有限公司 | One kind can bore sizing collar |
-
2019
- 2019-09-24 CN CN201910907163.0A patent/CN110566186A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2883666Y (en) * | 2005-09-30 | 2007-03-28 | 中国石化中原油气高新股份有限公司采油四厂 | Operation soft dredger |
| CN104818959A (en) * | 2015-04-08 | 2015-08-05 | 天津德瑞克石油工具有限公司 | Adjustable classification hoop for well cementation casing running |
| CN204532240U (en) * | 2015-04-09 | 2015-08-05 | 中国石油集团渤海钻探工程有限公司 | A kind of full-bore sizing collar |
| CN104989319A (en) * | 2015-05-26 | 2015-10-21 | 成都高普石油工程技术有限公司 | Cementing method based on continuous cementing mode in petroleum exploration |
| US20170342800A1 (en) * | 2016-05-27 | 2017-11-30 | Packers Plus Energy Services Inc. | Wellbore stage tool with redundant closing sleeves |
| CN109505561A (en) * | 2018-12-06 | 2019-03-22 | 盐城市森鑫石油机械有限公司 | Oil field flood suction and oil flow production exploitation repeated on-off valve and its working method |
| CN109779566A (en) * | 2019-01-08 | 2019-05-21 | 青岛海蚨奥工贸有限公司 | One kind can bore sizing collar |
Non-Patent Citations (2)
| Title |
|---|
| 塔里木石油勘探开发指挥部钻井监督办公室: "《钻井监督指南》", 31 July 1999 * |
| 胜利油田测井总站编写组: "《矿场地球物理测井技术电测井》", 30 June 1976 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898322A (en) * | 2021-11-16 | 2022-01-07 | 成都百胜野牛科技有限公司 | Natural gas well fluid separator |
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Application publication date: 20191213 |