CN109630062A - A kind of fine pressure control well cementing operation method - Google Patents
A kind of fine pressure control well cementing operation method Download PDFInfo
- Publication number
- CN109630062A CN109630062A CN201811286592.2A CN201811286592A CN109630062A CN 109630062 A CN109630062 A CN 109630062A CN 201811286592 A CN201811286592 A CN 201811286592A CN 109630062 A CN109630062 A CN 109630062A
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- China
- Prior art keywords
- pressure control
- well
- fine
- cementing
- fine pressure
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000005086 pumping Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 19
- 230000003247 decreasing effect Effects 0.000 claims abstract description 13
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000013011 mating Effects 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000035945 sensitivity Effects 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
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of fine pressure control well cementing operation methods, and its step are as follows: preparing the well mouth sealing device of mating running string outer diameter；Fine pressure control cementing operation Parameters Optimal Design is carried out by conventional cementing software；Pit shaft drilling fluid density is adjusted to design value to well depth, turn on pump circulating exhaust is designed according to fine pressure control cementing design tripping in well cementing pipe string with pressure；After pit shaft drilling fluid density is stablized, termination of pumping guarantees that down-hole pressure is stablized, accesses cementing operation equipment by fine pressure control ground installation in well head ftercompction；It is pumped into prepad fluid, cement slurry, after pad and drilling fluid by fine pressure control cementing operation design, is intervened after the completion of liquid is pumped by fine pressure control ground installation, down-hole pressure decreasing value caused by compensating because of termination of pumping, guarantees that down-hole pressure is stablized；Well head continues ftercompction to theing cement solidifies, pressure release.The present invention can effectively solve drain spray complexity problem caused by being fluctuated in such stratum work progress as down-hole pressure, greatly improve deep well cementing quality.
Description
Technical field
The present invention relates to sulfur crude gas well well cementing operation fields, specifically relate to a kind of close for the narrow safety of sulfur-bearing formation
Close window well cementing operation method.
Background technique
As deep layer bad ground is gradually moved towards in exploration and development, drillng operation is faced with more drain sprays complexity, fine to control
Pressure drilling well becomes the important sharp weapon for solving drain spray complexity, is reducing drilling fluid leakage, raising drilling well timeliness, realization geologic objective etc.
Aspect has played important function.But drain spray complex situations are equally existed during well cementing operation, are true due to strata pressure sensitivity
Protect well control safety, using usual manner pressure quietly layer when, easily caused in kill-job, setting of casing and be pumped into cement slurry during
The case where serious even well head mistake is returned is missed when circulation, is caused to return difficulty on cement slurry, can not be replaced to predetermined position, consolidate
The ropy problem of well, the complex engineering problems such as well head gas blowby.
Publication No. 104563870A, publication date are that the Chinese patent literature on April 29th, 2015 discloses a kind of pressure control
Gas drilling device and method, device include supercharging air system, well head system, pneumatics drilling machine and drilling machine choke manifold, wherein
Supercharging air system includes supercharger and/or air compressor machine, gas flow and manograph, relief tube and/or bypass pipe, emptying
Pipe, control valve.It further include back pressure system and fine choke manifold in device, well head system is equipped with swivel control head, back pressure system
System and fine choke manifold are connect with swivel control head.The invention this propose pressure control gas drilling method, comprising the following steps:
Formation pore pressure is calculated by well-log information；In the case of normal drilling, stratum annular pressure etc. is maintained by well head throttle valve
In formation pore pressure；When making up a joint or making a trip, the loss of pit shaft circulating pressure is adjusted and compensated with back pressure system.It should
Invention solves in gas drilling implementation process, and there are formation water output phenomenon, very good solution bad ground safety drilling is asked
Topic.
But using above patent document as the prior art of representative, still can not solve in such stratum work progress by
Drain spray complexity problem caused by down-hole pressure fluctuates, deep well cementing are of low quality.
Summary of the invention
The present invention is directed to provide a kind of fine pressure control well cementing operation for defect and deficiency present in the above-mentioned prior art
Method can effectively solve drain spray complexity problem caused by being fluctuated in such stratum work progress as down-hole pressure, greatly improve depth
Well cementing quality.
The present invention is realized by using following technical proposals:
A kind of fine pressure control well cementing operation method, it is characterised in that steps are as follows:
Step 1: preparing the well mouth sealing device of mating running string outer diameter；
Step 2: carrying out fine pressure control cementing operation Parameters Optimal Design by conventional cementing software, guarantee that bottom pressure is being pacified
In full operation Density Window；
Step 3: adjusting well to well depth, turn on pump circulating exhaust is designed according to fine pressure control cementing design tripping in well cementing pipe string with pressure
Cylinder drilling fluid density is to design value；
Step 4: termination of pumping guarantees well by fine pressure control ground installation in well head ftercompction after pit shaft drilling fluid density is stablized
Lower pressure is stablized, and cementing operation equipment is accessed；
Step 5: by fine pressure control cementing operation design be pumped into prepad fluid, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 6: by fine pressure control cementing operation design be pumped into cement slurry, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 7: by fine pressure control cementing operation design be pumped into after pad, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 8: it is pumped into replacement drilling fluid by fine pressure control cementing operation design, the termination of pumping after drilling fluid displacing to design position,
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 9: well head continues ftercompction to theing cement solidifies, pressure release.
The mating well mouth sealing device is according to the matched rotary sealing appts of running string outer diameter.
The fine pressure control ground installation includes self-choke control system, and back pressure compensation system being capable of fine offsetting well
Mouth pressure realizes that bottom pressure is stablized.
Compared with prior art, the beneficial effects obtained by the present invention are as follows it is as follows:
By above-mentioned process flow, entire cementing operation process bottom pressure control can effectively control stratum in scope of design
Fluid enters pit shaft, guarantees cementing quality.Solve the fluctuation of down-hole pressure in conventional cementing work progress, it can be substantially
Improve drain spray bad ground cementing quality；Fine pressure control well cementation software can effectively simulate whole process well head pressure controlling value,
And with fine pressure control software link operation, realize fine control on wellhead pressure, guarantee down-hole pressure stablize.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, in which:
Fig. 1 is the principle of the present invention schematic diagram.
Specific embodiment
As shown, as preferred forms of the invention, step includes:
Step 1: preparing the well mouth sealing device of mating running string outer diameter；
Step 2: carrying out fine pressure control cementing operation Parameters Optimal Design by conventional cementing software, guarantee that bottom pressure is being pacified
In full operation Density Window；
Step 3: adjusting well to well depth, turn on pump circulating exhaust is designed according to fine pressure control cementing design tripping in well cementing pipe string with pressure
Cylinder drilling fluid density is to design value；
Step 4: termination of pumping guarantees well by fine pressure control ground installation in well head ftercompction after pit shaft drilling fluid density is stablized
Lower pressure is stablized, and cementing operation equipment is accessed；
Step 5: by fine pressure control cementing operation design be pumped into prepad fluid, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 6: by fine pressure control cementing operation design be pumped into cement slurry, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 7: by fine pressure control cementing operation design be pumped into after pad, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 8: it is pumped into replacement drilling fluid by fine pressure control cementing operation design, the termination of pumping after drilling fluid displacing to design position,
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping guarantee that down-hole pressure is stablized；
Step 9: well head continues ftercompction to theing cement solidifies, pressure release.
The mating well mouth sealing device is according to the matched rotary sealing appts of running string outer diameter.
The fine pressure control ground installation includes self-choke control system, and back pressure compensation system being capable of fine offsetting well
Mouth pressure realizes that bottom pressure is stablized.
By above-mentioned process flow, entire cementing operation process bottom pressure control can be controlled effectively in scope of design
Formation fluid enters pit shaft, guarantees cementing quality.
Claims (2)
1. a kind of fine pressure control well cementing operation method, it is characterised in that steps are as follows:
Step 1: preparing the well mouth sealing device of mating running string outer diameter；
Step 2: carrying out fine pressure control cementing operation Parameters Optimal Design by conventional cementing software, guarantee that bottom pressure is being pacified
In full operation Density Window；
Step 3: adjusting well to well depth, turn on pump circulating exhaust is designed according to fine pressure control cementing design tripping in well cementing pipe string with pressure
Cylinder drilling fluid density is to design value；
Step 4: termination of pumping guarantees well by fine pressure control ground installation in well head ftercompction after pit shaft drilling fluid density is stablized
Lower pressure is stablized, and cementing operation equipment is accessed；
Step 5: by fine pressure control cementing operation design be pumped into prepad fluid, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping；
Step 6: by fine pressure control cementing operation design be pumped into cement slurry, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping；
Step 7: by fine pressure control cementing operation design be pumped into after pad, after the completion of liquid is pumped by
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping；
Step 8: it is pumped into replacement drilling fluid by fine pressure control cementing operation design, the termination of pumping after drilling fluid displacing to design position,
Fine pressure control ground installation intervention, down-hole pressure decreasing value caused by compensating because of termination of pumping；
Step 9: well head continues ftercompction to theing cement solidifies, pressure release.
2. a kind of fine pressure control well cementing operation method according to claim 1, it is characterised in that: the mating wellhead sealing
Device is according to the matched rotary sealing appts of running string outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286592.2A CN109630062A (en) | 2018-10-31 | 2018-10-31 | A kind of fine pressure control well cementing operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286592.2A CN109630062A (en) | 2018-10-31 | 2018-10-31 | A kind of fine pressure control well cementing operation method |
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| Publication Number | Publication Date |
|---|---|
| CN109630062A true CN109630062A (en) | 2019-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811286592.2A Pending CN109630062A (en) | 2018-10-31 | 2018-10-31 | A kind of fine pressure control well cementing operation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593856A (en) * | 2019-10-21 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司 | Method for measuring density window of well cementation safety operation |
| CN111058794A (en) * | 2019-11-26 | 2020-04-24 | 中国石油天然气股份有限公司 | Control method and device for applying back pressure to annulus |
| CN114183070A (en) * | 2021-12-07 | 2022-03-15 | 托普威尔石油技术股份公司 | Drilling method without drilling and closing under pressure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0410304A2 (en) * | 1989-07-28 | 1991-01-30 | KELLER GRUNDBAU GmbH | Device for injecting a suspension |
| CN101139919A (en) * | 2007-10-24 | 2008-03-12 | 北京德美高科科技有限责任公司 | Negative pressure well cementing system and control method thereof |
| CN102029649A (en) * | 2009-09-29 | 2011-04-27 | 四机赛瓦石油钻采设备有限公司 | Automatic control method of well-cementing cement mixing operation |
-
2018
- 2018-10-31 CN CN201811286592.2A patent/CN109630062A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0410304A2 (en) * | 1989-07-28 | 1991-01-30 | KELLER GRUNDBAU GmbH | Device for injecting a suspension |
| CN101139919A (en) * | 2007-10-24 | 2008-03-12 | 北京德美高科科技有限责任公司 | Negative pressure well cementing system and control method thereof |
| CN102029649A (en) * | 2009-09-29 | 2011-04-27 | 四机赛瓦石油钻采设备有限公司 | Automatic control method of well-cementing cement mixing operation |
Non-Patent Citations (1)
| Title |
|---|
| 郭继刚: "精细动态控压固井技术在顺南区块的应用", 《钻井液与完井液》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593856A (en) * | 2019-10-21 | 2019-12-20 | 中国石油集团川庆钻探工程有限公司 | Method for measuring density window of well cementation safety operation |
| CN111058794A (en) * | 2019-11-26 | 2020-04-24 | 中国石油天然气股份有限公司 | Control method and device for applying back pressure to annulus |
| CN114183070A (en) * | 2021-12-07 | 2022-03-15 | 托普威尔石油技术股份公司 | Drilling method without drilling and closing under pressure |
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Application publication date: 20190416 |