CN104295243A - Completion pipe column and completion technology for oil-gas well - Google Patents
Completion pipe column and completion technology for oil-gas well Download PDFInfo
- Publication number
- CN104295243A CN104295243A CN201310523164.8A CN201310523164A CN104295243A CN 104295243 A CN104295243 A CN 104295243A CN 201310523164 A CN201310523164 A CN 201310523164A CN 104295243 A CN104295243 A CN 104295243A
- Authority
- CN
- China
- Prior art keywords
- completion
- oil
- inner oil
- well
- safety valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 241000254175 Anthonomus grandis Species 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 210000000323 shoulder joint Anatomy 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a completion pipe column and completion technology for an oil-gas well and belongs to the technical field of completion pipe columns for oil production engineering. The completion pipe column for the oil-gas well is composed of an inner oil pipe, a safety valve and a hydraulic control pipeline, wherein an adapter connector is connected to the upper portion of the safety valve through threads, the adapter connector is provided with a step-shaped inner shoulder and connecting threads and is connected with the inner oil pipe and an outer pipe, and a through hole is formed in the inner shoulder of the adapter connector; the hydraulic control pipeline is located in the space between the inner oil pipe and the outer pipe, penetrates through the through hole in the inner shoulder of the adapter connector and is sealed through a sealing piece. The inner oil pipe and the hydraulic control pipeline are fixed together through a clamping ring. According to the completion pipe column and completion technology for the oil-gas well, the completion pipe column with the subsurface safety valve is obtained under the condition of non-well-killing operation, pollution to an oil-gas layer is reduced during well completion, and a reservoir stratum is effectively protected; the technology is low in cost, the pipe column is reliable in sealing, the completion technology is simple, non-well-killing operation can be achieved under the condition that the internal structure and functions of an original pipe column are not changed, and the application range is wide.
Description
Technical field
The invention belongs to petroleum production engineering completion tubular column technical field, relate to a kind of oil gas well completion tubing string and well-completing process.
Background technology
During oil gas well completion operation, be balance down-hole pressure, prevent gas blowout accident, well killing fluid kill-job need be adopted, because well killing fluid is chemical agent, easily pollute reservoir, affect Oil/gas Well output.Particularly development late stage, the well that strata pressure is lower, well killing fluid is easily missed into stratum, easilier pollutes reservoir.In order to reduce the pollution to reservoir, usually such well needs to adopt snubbing serving mode, namely when not pouring into well killing fluid, utilizes the capable lower tubular column that rises of well head snubbing serving apparatus, with pressure to carry out completion practice.
Gas storage well, high sour gas well, offshore oil gas well due to safe coefficient require high, completion tubular column is all provided with storm valve in the position close to well head.Storm valve there is a 1/4 ＂ circular metal liquid controling pipe line be close to oil-pipe external wall and extend to well head, and receive the fluid control pressure (switch order) on ground, when ground serious accident occurs, as well head is out of control, down-hole can closing well rapidly, realizes being perfectly safe of Oil/gas Well controlled.
Current snubbing serving device can only seal the circular tubing string of rule, but because the tubing string installing storm valve also exists a liquid controling pipe line outward, this erose pipe external seal can not be realized when carrying out snubbing serving, thus cause ripe snubbing serving technology cannot be applied in the completion practice of this kind of band downhole safety valve pit.And existing completion tubular column and well-completing process all cannot solve this problem, the mode of kill-job can only be adopted to carry out completion practice, be unfavorable for Completion Operations mesolow reservoir protection.
Summary of the invention
The object of the invention is the technological deficiency in order to overcome the completion tubular column poor sealing performance used with storm valve under snubbing serving device, providing a kind of and adapting to wide, simple completion tubular column and well-completing process.
The present invention is realized by the following technical programs:
The present invention is made up of inner oil tube, safety valve, liquid controling pipe line, is threaded connection variable buckle joint on safety valve top, and variable buckle joint is provided with stepped interior shoulder and connecting thread, is connected respectively with inner oil tube and outer tube, in variable buckle joint, shoulder has through hole; The annular space of liquid controling pipe line between inner oil tube and outer tube, and pass through the through hole in variable buckle joint on shoulder, sealed by seal.
Described inner oil tube and liquid controling pipe line are fixed by snap ring.
Under to enter the technique of completion tubular column as follows:
The first step, be connected with variable buckle joint screw thread by the flowing pipe nipple on safety valve top, the through hole that liquid controling pipe line passes through in variable buckle joint on shoulder is connected with safety valve, and inner oil tube, outer tube are connected with variable buckle joint screw thread respectively.
Second step, blocks outer tube by no killing well device, G.I.H, more alternately connects inner oil tube and outer tube successively to well head.
3rd step, be threaded boll-weevil hanger inner oil tube, and be seated in well head four-way, realizes completion tubular column technique under snubbing serving.
Beneficial effect of the present invention is:
1, present invention achieves the completion tubular column with storm valve under snubbing serving, decrease hydrocarbon contamination in Completion Operations, available protecting reservoir.
2, the sealing of cost of the present invention low, tubing string is reliable, well-completing process is simple, does not change former tubing string internal construction and function can realize snubbing serving, wide accommodation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, concrete description is done to the present invention:
From accompanying drawing 1, the present invention is made up of inner oil tube 2, safety valve 8 and liquid controling pipe line 3, variable buckle joint 4 is threaded connection on safety valve 8 top, variable buckle joint 4 is provided with stepped interior shoulder and connecting thread, can be connected with inner oil tube 2 and outer tube 1 respectively, in variable buckle joint 4, shoulder have through hole 5; The annular space of liquid controling pipe line 3 between inner oil tube 2 and outer tube 1, and pass through the through hole 5 in variable buckle joint 4 on shoulder, sealed by seal 6.
Described inner oil tube 2 is fixed by snap ring with liquid controling pipe line 3.
Well head uses snubbing serving device, when lower completion tubular column is to storm valve precalculated position, the flowing pipe nipple 7 on safety valve 8 top is threaded with variable buckle joint 4, the through hole 5 that liquid controling pipe line 3 passes through in variable buckle joint 4 on shoulder is connected with safety valve 8, inner oil tube 2, outer tube 1 are threaded with variable buckle joint 4 respectively, outer tube 1 is blocked by no killing well device, G.I.H, alternately connect inner oil tube 2 and outer tube 1 to well head successively again, be threaded boll-weevil hanger inner oil tube 2, and be seated in well head four-way, realize completion tubular column technique under snubbing serving.
Claims (3)
1. an oil gas well completion tubing string, be made up of inner oil tube (2), safety valve (8) and liquid controling pipe line (3), it is characterized in that: be threaded connection variable buckle joint (4) on safety valve (8) top, variable buckle joint (4) is provided with stepped interior shoulder and connecting thread, be connected with inner oil tube (2) and outer tube (1) respectively, in variable buckle joint (4), shoulder have through hole (5); Liquid controling pipe line (3) is positioned at the annular space between inner oil tube (2) and outer tube (1), and passes through the through hole (5) on variable buckle joint (4) interior shoulder, is sealed by seal (6).
2. oil gas well completion tubing string according to claim 1, is characterized in that: described inner oil tube (2) and liquid controling pipe line (3) are fixed by snap ring.
3. an oil gas well completion pipe string technology, it is characterized in that comprising following steps: the first step, the flowing pipe nipple (7) on safety valve (8) top is threaded with variable buckle joint (4), the through hole (5) that liquid controling pipe line (3) passes through on variable buckle joint (4) interior shoulder is connected with safety valve (8), and inner oil tube (2), outer tube (1) are threaded with variable buckle joint (4) respectively;
Second step, blocks outer tube (1) by no killing well device, G.I.H, more alternately connects inner oil tube (2) and outer tube (1) successively to well head;
3rd step, be threaded boll-weevil hanger inner oil tube (2), and be seated in well head four-way, realizes completion tubular column technique under snubbing serving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523164.8A CN104295243B (en) | 2013-10-29 | 2013-10-29 | Oil gas well completion tubing string and well-completing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523164.8A CN104295243B (en) | 2013-10-29 | 2013-10-29 | Oil gas well completion tubing string and well-completing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104295243A true CN104295243A (en) | 2015-01-21 |
| CN104295243B CN104295243B (en) | 2018-02-06 |
Family
ID=52315160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310523164.8A Active CN104295243B (en) | 2013-10-29 | 2013-10-29 | Oil gas well completion tubing string and well-completing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104295243B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401537A (en) * | 2016-11-16 | 2017-02-15 | 中国石油大学(华东) | Well completion pipe string of underground gas storage well and well completion method |
| CN109826586A (en) * | 2019-01-04 | 2019-05-31 | 中国石油集团川庆钻探工程有限公司 | A kind of gas well process method for well completion with pressure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030136556A1 (en) * | 2002-01-18 | 2003-07-24 | Cornelssen Michael James | Tubing hanger and adapter assembly |
| US20080060817A1 (en) * | 2006-09-09 | 2008-03-13 | Rattler Tools, Llc | Production tubing hydraulic release mechanism |
| CN201202447Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Composite concentric tube column for liquor drainage gas production process |
| CN102549232A (en) * | 2009-07-31 | 2012-07-04 | 普拉德研究及开发股份有限公司 | A cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto |
| CN202544824U (en) * | 2012-03-27 | 2012-11-21 | 中国海洋石油总公司 | Concentric double-pipe hierarchical injection pipe column |
| CN203547561U (en) * | 2013-10-29 | 2014-04-16 | 中国石油化工股份有限公司 | Completion string for oil and gas well |
-
2013
- 2013-10-29 CN CN201310523164.8A patent/CN104295243B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030136556A1 (en) * | 2002-01-18 | 2003-07-24 | Cornelssen Michael James | Tubing hanger and adapter assembly |
| US20080060817A1 (en) * | 2006-09-09 | 2008-03-13 | Rattler Tools, Llc | Production tubing hydraulic release mechanism |
| CN201202447Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Composite concentric tube column for liquor drainage gas production process |
| CN102549232A (en) * | 2009-07-31 | 2012-07-04 | 普拉德研究及开发股份有限公司 | A cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto |
| CN202544824U (en) * | 2012-03-27 | 2012-11-21 | 中国海洋石油总公司 | Concentric double-pipe hierarchical injection pipe column |
| CN203547561U (en) * | 2013-10-29 | 2014-04-16 | 中国石油化工股份有限公司 | Completion string for oil and gas well |
Non-Patent Citations (1)
| Title |
|---|
| 王文启: "油管变扣接头的改进", 《机械工程师》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401537A (en) * | 2016-11-16 | 2017-02-15 | 中国石油大学(华东) | Well completion pipe string of underground gas storage well and well completion method |
| CN109826586A (en) * | 2019-01-04 | 2019-05-31 | 中国石油集团川庆钻探工程有限公司 | A kind of gas well process method for well completion with pressure |
| CN109826586B (en) * | 2019-01-04 | 2021-03-26 | 中国石油集团川庆钻探工程有限公司 | Well completion process method with pressure for gas well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104295243B (en) | 2018-02-06 |
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