CN104295243B - Oil gas well completion tubing string and well-completing process - Google Patents
Oil gas well completion tubing string and well-completing process Download PDFInfo
- Publication number
- CN104295243B CN104295243B CN201310523164.8A CN201310523164A CN104295243B CN 104295243 B CN104295243 B CN 104295243B CN 201310523164 A CN201310523164 A CN 201310523164A CN 104295243 B CN104295243 B CN 104295243B
- Authority
- CN
- China
- Prior art keywords
- buckle joint
- inner oil
- tube
- well
- tubing string
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 241000254175 Anthonomus grandis Species 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000002184 metal 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
- 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)
- Pipeline Systems (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of oil gas well completion tubing string and well-completing process, belong to petroleum production engineering completion tubular column technical field, it is made up of inner oil tube, safety valve, liquid controling pipe line, change buckle joint is connected through a screw thread on safety valve top, become buckle joint and be provided with stepped interior shoulder and connection screw thread, it is connected respectively with inner oil tube and outer tube, through hole is provided with shoulder becoming in buckle joint；Annular space of the liquid controling pipe line between inner oil tube and outer tube, and the through hole in change buckle joint on shoulder is passed through, sealed by seal.Described inner oil tube is fixed with liquid controling pipe line by snap ring.The present invention realizes the completion tubular column of snubbing serving lower band storm valve, reduces hydrocarbon contamination in Completion Operations, effectively protects reservoir；The process costs are low, tubing string sealed reliable, well-completing process are simple, do not change former tubing string internal structure and function and snubbing serving, wide adaptation range can be achieved.
Description
Technical field
The invention belongs to petroleum production engineering completion tubular column technical field, is related to a kind of oil gas well completion tubing string and well-completing process.
Background technology
During oil gas well completion operation, to balance down-hole pressure, gas blowout accident is prevented, well killing fluid kill-job need to be used, due to pressure
Well liquid is chemical agent, easily pollutes reservoir, influences oil gas well production.Particularly development late stage, the relatively low well of strata pressure, pressure
Well liquid is easily missed into stratum, it is easier to which reservoir is polluted.In order to reduce the pollution to reservoir, generally such well needs to adopt
With snubbing serving mode, i.e., in the case where not irrigating well killing fluid, removed using well head snubbing serving device band pressure row
Tubing string carries out completion practice.
Gas storage well, high sour gas well, offshore oil gas well require high due to safe coefficient, and completion tubular column is close to well head
Position is mounted on storm valve.There is a 1/4 ＂ circular metal liquid controling pipe line to be close to oil-pipe external wall extension on storm valve
To well head, and receive the fluid control pressure on ground（Switch order）, when serious accident, as well head is out of control, underground occur for ground
Can rapid closing well, realize that being perfectly safe for Oil/gas Well is controllable.
Current snubbing serving device can only seal the circular tubing string of rule, but due to installing the tubing string of storm valve
A liquid controling pipe line also be present outside, can not be realized during snubbing serving the pipe external seal of this irregular shape, so as to
Cause the snubbing serving technology of maturation can not be applied in this kind of completion practice with downhole safety valve pit.And existing completion
Tubing string and well-completing process can not solve the problem, and completion practice can only be carried out by the way of kill-job, is unfavorable for Completion Operations
Mesolow reservoir protection.
The content of the invention
The invention aims to overcome the completion tubular column for using snubbing serving device lower band storm valve to seal
The technological deficiency of poor performance, there is provided a kind of to adapt to wide, simple and easy 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, and change buckle joint is connected through a screw thread on safety valve top,
Become buckle joint and be provided with stepped interior shoulder and connection screw thread, be connected respectively with inner oil tube and outer tube, become in buckle joint on shoulder
It is provided with through hole；Annular space of the liquid controling pipe line between inner oil tube and outer tube, and the through hole in change buckle joint on shoulder is passed through, by close
Seals.
Described inner oil tube is fixed with liquid controling pipe line by snap ring.
The technique of tripping in completion tubular column is as follows：
The first step, the flowing pipe nipple on safety valve top is connected with variable buckle joint screw thread, liquid controling pipe line passes through change buckle joint
Through hole on interior shoulder is connected with safety valve, and inner oil tube, outer tube are connected with variable buckle joint screw thread respectively.
Second step, outer tube, G.I.H are blocked by no killing well device, then alternately connect inner oil tube and outer tube successively to well
Mouthful.
3rd step, boll-weevil hanger is threadedly coupled inner oil tube, and is seated in well head four-way, realize completion under snubbing serving
Pipe string technology.
The beneficial effects of the present invention are：
1st, the present invention realizes the completion tubular column of snubbing serving lower band storm valve, reduces oil gas in Completion Operations
Layer pollution, effectively protects reservoir.
2nd, cost of the present invention is low, tubing string sealed reliable, well-completing process are simple, does not change former tubing string internal structure and function i.e.
Snubbing serving, wide adaptation range can be achieved.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Specific description is done to the present invention below in conjunction with the accompanying drawings：
From accompanying drawing 1, the present invention is made up of inner oil tube 2, safety valve 8 and liquid controling pipe line 3, passed through on the top of safety valve 8
Threaded connection become buckle joint 4, become buckle joint 4 be provided with stepped interior shoulder and connection screw thread, can respectively with inner oil tube 2 and outer tube 1
Connection, through hole 5 is provided with shoulder becoming in buckle joint 4；Annular space of the liquid controling pipe line 3 between inner oil tube 2 and outer tube 1, and wear
More become the through hole 5 in buckle joint 4 on shoulder, sealed by seal 6.
Described inner oil tube 2 is fixed with liquid controling pipe line 3 by snap ring.
Well head uses snubbing serving device, when lower completion tubular column is to storm valve precalculated position, by the top of safety valve 8
Flowing pipe nipple 7 be threadedly coupled with becoming buckle joint 4, liquid controling pipe line 3 passes through the through hole 5 and safety valve 8 become in buckle joint 4 on shoulder
Connection, inner oil tube 2, outer tube 1 are threadedly coupled with becoming buckle joint 4 respectively, and outer tube 1 is blocked by no killing well device, G.I.H, then according to
Secondary alternately connection inner oil tube 2 and outer tube 1 by boll-weevil hanger threaded connection inner oil tube 2, and are seated in well head four-way, in fact to well head
Completion tubular column technique under existing snubbing serving.
Claims (3)
- A kind of 1. oil gas well completion tubing string, by inner oil tube（2）, safety valve（8）And liquid controling pipe line（3）Composition, it is characterized in that：Pacifying Full valve（8）Top is connected through a screw thread change buckle joint（4）Bottom, become buckle joint（4）Provided with stepped interior shoulder and connection spiral shell Line, interior shoulder upper end are provided with the first internal thread, and interior shoulder lower end is provided with the second internal thread, the first internal thread and outer tube（1）Connection, Second internal thread and inner oil tube（2）Connection, becoming buckle joint（4）Through hole is provided with interior shoulder（5）；Liquid controling pipe line（3）Positioned at interior Oil pipe（2）And outer tube（1）Between annular space, and pass through change buckle joint（4）Through hole on interior shoulder（5）, by seal（6）It is close Envelope.
- 2. oil gas well completion tubing string according to claim 1, it is characterized in that：Described inner oil tube（2）With liquid controling pipe line（3） Fixed by snap ring.
- 3. a kind of oil gas well completion pipe string technology, it is characterised in that comprise the steps of：The first step, by safety valve（8）Top Flow pipe nipple（7）With becoming buckle joint（4）Threaded connection, liquid controling pipe line（3）Pass through change buckle joint（4）Through hole on interior shoulder（5） With safety valve（8）Connection, inner oil tube（2）, outer tube（1）Respectively with becoming buckle joint（4）Threaded connection；Second step, outer tube is blocked by no killing well device（1）, G.I.H, then inner oil tube is alternately connected successively（2）And outer tube（1） To well head；3rd step, boll-weevil hanger is threadedly coupled inner oil tube（2）, and well head four-way is seated in, realize completion under snubbing serving Pipe string technology.
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 CN104295243A (en) | 2015-01-21 |
| CN104295243B true 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) |
Families Citing this family (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 |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688386B2 (en) * | 2002-01-18 | 2004-02-10 | Stream-Flo Industries Ltd. | Tubing hanger and adapter assembly |
| US7748465B2 (en) * | 2006-09-09 | 2010-07-06 | Rattler Tools, Llc | Production tubing hydraulic release mechanism and method of use |
| 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 |
| US8573294B2 (en) * | 2009-07-31 | 2013-11-05 | Schlumberger Technology Corporation | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN104295243A (en) | 2015-01-21 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |