CN108005612A - Five open time deep well annular pressure management method - Google Patents
Five open time deep well annular pressure management method Download PDFInfo
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- CN108005612A CN108005612A CN201711308559.0A CN201711308559A CN108005612A CN 108005612 A CN108005612 A CN 108005612A CN 201711308559 A CN201711308559 A CN 201711308559A CN 108005612 A CN108005612 A CN 108005612A
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- China
- Prior art keywords
- open time
- cement
- deep well
- drill bit
- management method
- 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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- 238000007726 management method Methods 0.000 title claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000006260 foam Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000243 solution 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/424—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells using "spacer" compositions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses one kind five to open time deep well annular pressure management method, comprises the following steps：S1, top layer：Lower marine riser and fixation after bored borehole；S2, one open time：Act drill bit after below bored borehole to mud face, next to drive casing, cement injection returns to mud face；S3, two open time：Drill bit is played out after 1500 1600m below bored borehole to mud face, lower two open bunch tube, and cement injection makes to return high control 35 45m below hanger；S4, three open time：Drill bit is played out after being drilled into target zone, lower three drive casing, fill well head, and cement injection returns to 120m below the casing shoe of upper strata, fills nitrogen；S5, four open time：Drill bit is played out after being drilled into target zone, lower four drive casing, fill well head, cement injection, and head slurries return to 120m below the casing shoe of upper strata；More than head slurries filling nitrogen, is insulating liquid section between head slurries and tail slurry；Drill bit is played out after S6, bored borehole to target zone, lower tail pipe string, cement injection, is transferred to lower step operation after to be solidified.The present invention can solve the problems, such as that five open time deep well to easily cause annular space with pressure.
Description
Technical field
The invention belongs to the resource such as petroleum gas drilling engineering technical field, and in particular to one kind five is opened time deep
Well annular pressure management method.
Background technology
At present, lot of domestic and international oil/gas well is there are serious annular space phenomenon with pressure, in the shallower sea in land or the depth of water
In foreign platform, annular space management with pressure is relatively easy；But in deepwater drilling, since well head head is located at the upper km depth of water
Seabed, annular space problem with pressure are difficult to handle, it is therefore desirable to management is carried out in drilling process, avoids occurring after drillng operation
The problem of annular space is with pressure.
Traditional five open time deep well annular pressure management：(1) top layer uses loopful sky sealing, and cement returns height and returns
To mud face；(2) one open and carry out sealing as one sees fit, some well sealing loopfuls are empty, and cement returns to mud face, some wells use single stage double plugging,
The first slurry of cement is to returning to upper strata casing shoe above 50m or so.(3) two open, three open, four open and five open frequently with single stage double plugging,
The first slurry of cement returns to upper strata casing shoe above 150-300m.This management method may be applicable in the relatively low block of strata pressure,
But, particularly air content higher stratum higher in strata pressure, it is with pressure to may result in annular space, or even squeezes and ruin casing, sends out
Raw unthinkable complex situations.
Above-mentioned discussion content purpose be to reader introduce may be described below and/or advocate it is of the invention each
The various aspects of a relevant technology of aspect, it is believed that the discussion content contributes to as reader with background's information, to be conducive to more
Understand various aspects of the invention well, it is therefore to be understood that be that these discussions are read with this angle, it is existing without being to recognize that
Technology.
The content of the invention
One kind five is provided and opens time deep well annular pressure pipe it is an object of the invention to avoid deficiency of the prior art
Reason method, solves the problems, such as that five open time deep well and easily cause that annular space is with pressure, to improve five operational securities for opening time deep well.
The purpose of the present invention is achieved through the following technical solutions：
One kind five is provided and opens time deep well annular pressure management method, is comprised the following steps：
S1, top layer：70-80 meters of bored borehole, tripping in marine riser and fixation；
S2, one open time：Drill bit is played out below bored borehole to mud face after 600-700m, casing is driven in tripping in one, then cementing
Slurry is filled with to annular clearance, and cement mortar returns to mud face；
S3, two open time：Drill bit is played out below bored borehole to mud face after 1500-1600m, bunch tube is opened in tripping in two, and two open set
Pipe string hangs on upper strata casing shoe above 145m, then injects cement mortar toward annular space, make cement mortar return high control hanger with
Lower 35-45m；
S4, three open time：Drill bit is played out after being drilled into target zone, casing is driven in tripping in three, well head is filled, then toward annular injection cement
Slurry, cement mortar return to 120m below the casing shoe of upper strata；Cement mortar above annular space fills nitrogen；
S5, four open time：Drill bit is played out after being drilled into target zone, casing is driven in tripping in four, well head is filled, then toward annular injection cement
Slurry, the first slurry of cement return to 120m below the casing shoe of upper strata；The first slurry above annular space filling nitrogen of cement, the first slurry of cement and cement tail slurry
Between insulating liquid segment length be 180-190m, whole annular spaces are full of cement tail slurry below insulating liquid；
Drill bit, tripping in tail pipe string are played out after S6, bored borehole to target zone, tail pipe string is hung on more than upper strata casing shoe
150m, injects cement mortar, makes whole backfilling cement slurries below tail pipe string hanger, lower step operation is transferred to after to be solidified.
As a further improvement, in step s3, two outer walls for opening bunch tube carry compressible foam.
As a further improvement, in step s3, seal method with single-stage list and inject cement mortar toward annular space.
As a further improvement, in step s 4, method is sealed toward annulus water injection mud with single-stage list.
As a further improvement, in step s 5, with single stage double plugging method toward annulus water injection mud.
As a further improvement, in step s 5, spacer fluid formulation is：+ 4 portions of DISPACER interleaving agents+5 of 100 parts of water
Part PC-G80L+80 parts of bullets of fluid loss agent mould spheres, and whole annular spaces are cement tail slurry below insulating liquid.
As a further improvement, in step s 6, the outer wall belt compressible foam of tail pipe string.
As a further improvement, in step s 6, with single-stage list envelope method injection cement mortar.
Provided by the invention five open time deep well annular pressure management method, are conducive to improve five operations for opening time deep well
Safety, compared with prior art, its advantage is：
(1) add one open time annular space cement return height, be conducive to prevent two to open, three open loops it is empty with seabed unicom；
(2) reduce two open time cement return height, be conducive to improve two leakproofness for opening casing suspension；
(3) reduce three open time, four open time cement return height, and optimize the formula of three open loop sky insulating liquids, if three
Open, there is the problem of annular space is with pressure in four annular spaces for driving casing, the nitrogen on top and middle insulating liquid first can produce compression,
The annular space produced during balanced production is with pressure；Secondly cement head is starched and had from upper strata casing shoe with a distance from 110m or so, therefore is produced
Raw annular pressure can be for delivery to stratum；
(4) two open with five exploitations with the bunch tubes with compressible foam, are conducive to prevent ganging up mutually between annular space, have
The operational securities of time deep well are opened beneficial to raising five.
(5) the configuration of the present invention is simple, it is easy to operate, can be in field of oil drilling extensive use.
Brief description of the drawings
Using attached drawing, the invention will be further described, but the embodiment in attached drawing does not form any limit to the present invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is that the present invention five opens time step block diagram of deep well annular pressure management method.
Fig. 2 is that the present invention five opens the structure diagram that time deep well annular pressure management method is applied to well bore.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art more fully understand technical scheme
Apply example the present invention is described in further detail, it is necessary to explanation, in the case where there is no conflict, embodiments herein and
Feature in embodiment can be mutually combined.
Provided in an embodiment of the present invention five open time deep well annular pressure management method step as shown in Figure 1, casing programme
As shown in Fig. 2, specifically comprise the following steps：
S1, top layer：70-80 meters of bored borehole, tripping in marine riser 1 are simultaneously fixed；
S2, one open time：Drill bit is played out after 600-700m and casing 2 is driven in tripping in one, then water filling below bored borehole to mud face
Mud 3 to annular clearance is filled with, and cement returns to mud face；
S3, two open time：Drill bit and tripping in outer wall belt compressible foam are played out below bored borehole to mud face after 1500-1600m
Two drive casing 4, two, which open bunch tube, hangs on upper strata casing shoe above 145m or so, with single-stage list envelope method injection cement mortar 6, makes
High control is returned in hanger 35-45m below 5；Single-stage list envelope method is injected with beneficial to raising cementing quality.
S4, three open time：Drill bit is played out after being drilled into target zone, casing 7 is driven in tripping in three, fills well head, then seals method with single-stage list
Toward annulus water injection mud 8, cement mortar returns to 120m below the casing shoe of upper strata；Starch column above annular space filling nitrogen 9；
S5, four open time：Drill bit is played out after being drilled into target zone, casing 10 is driven in tripping in four, well head is filled, then with single stage double plugging method
Toward annulus water injection mud, single stage double plugging method is injected with beneficial to pressure leakage stratum is avoided, and the first slurry 11 of cement is returned to below the casing shoe of upper strata
120m；Column above annular space filling nitrogen 12 is starched, the first slurry less than 11 of cement is the insulating liquid 13 of 180-190m, and spacer fluid formulation is：
100 parts of+4 parts of water+80 parts of PC-G80L fluid loss agents of+5 parts of DISPACER interleaving agents bullets mould spheres, whole annular spaces below insulating liquid
For cement tail slurry 14；
S6, five open time：Drill bit and the tail pipe pipe string 15 of tripping in outer wall belt compressible foam are played out after bored borehole to target zone,
Tail pipe pipe string 15 hangs on upper strata casing shoe above 155m or so, with single-stage list envelope method injection cement mortar, makes extension hanger 16
Following whole backfilling cement 17, is transferred to lower step operation after to be solidified.Single-stage list envelope method is injected with beneficial to raising cementing quality.
The present invention adds one and opens time annular space cement on the basis of conventional five open time deep well annular pressure management method
Return height, be conducive to prevent two to open, three open loops it is empty with seabed unicom；Reduce two open time cement return height, be conducive to raising two
Open the leakproofness of casing suspension；Reduce three open time, four open time cement return height, and optimize matching somebody with somebody for three open loop sky insulating liquids
Side, if three open, the problem of annular space is with pressure occur in four annular spaces for driving casing, the nitrogen on top and middle insulating liquid first can be with
Compression is produced, the annular space produced during balanced production is with pressure；Secondly cement head starch from upper strata casing shoe have 110m or so away from
From, therefore the annular pressure produced can be for delivery to stratum；Two open with five exploitations with the casings with compressible foam, are conducive to prevent
Only ganging up mutually between annular space, is conducive to improve five operational securities for opening time deep well.
Many details are elaborated in above description to facilitate a thorough understanding of the present invention, still, the present invention can be with
Implemented using other different from other modes described here, it is thus impossible to be interpreted as limiting the scope of the invention.
In short, although the present invention lists above-mentioned preferred embodiment, although it should be noted that those skilled in the art
Member can carry out various change and remodeling, unless such change and remodeling deviate from the scope of the present invention, otherwise should all wrap
Include within the scope of the present invention.
Claims (8)
1. one kind five opens time deep well annular pressure management method, it is characterised in that comprises the following steps：
S1, top layer：70-80 meters of bored borehole, tripping in marine riser and fixation；
S2, one open time：Drill bit is played out below bored borehole to mud face after 600-700m, casing is driven in tripping in one, and then cement injection is extremely
Annular clearance is filled with, and cement mortar returns to mud face；
S3, two open time：Drill bit is played out below bored borehole to mud face after 1500-1600m, bunch tube is opened in tripping in two, and two open bunch tube
Hang on one and open time casing shoe above 145m, then inject cement mortar toward annular space, cement mortar is returned high control below hanger
35-45m；
S4, three open time：Drill bit is played out after being drilled into target zone, casing is driven in tripping in three, well head is filled, then toward annulus water injection mud, water
Mud returns to two and opens 120m below time casing shoe, cement mortar above annular space filling nitrogen；
S5, four open time：Drill bit is played out after being drilled into target zone, casing is driven in tripping in four, well head is filled, then toward annulus water injection mud, water
The first slurry of mud returns to three and opens 120m below time casing shoe, the first slurry above annular space filling nitrogen of cement, the first slurry of cement and cement tail slurry it
Between insulating liquid segment length be 180-190m, whole annular spaces are full of cement tail slurry below insulating liquid；
Drill bit, tripping in tail pipe string are played out after S6, bored borehole to target zone, tail pipe string hangs on four and opens time casing shoe above 150m,
Cement mortar is injected, makes whole backfilling cement slurries below tail pipe string hanger, lower step operation is transferred to after to be solidified.
2. according to claim 1 five open time deep well annular pressure management method, it is characterised in that：In step s3,
Two outer walls for opening bunch tube carry compressible foam.
3. according to claim 2 five open time deep well annular pressure management method, it is characterised in that：In step s3,
Method, which is sealed, with single-stage list injects cement mortar toward annular space.
4. according to claim 3 five open time deep well annular pressure management method, it is characterised in that：In step s 4,
Method is sealed toward annulus water injection mud with single-stage list.
5. according to claim 4 five open time deep well annular pressure management method, it is characterised in that：In step s 5,
With single stage double plugging method toward annulus water injection mud.
6. according to claim 4 five open time deep well annular pressure management method, it is characterised in that：In step s 5,
Spacer fluid formulation is：100 parts of+4 parts of water+80 parts of PC-G80L fluid loss agents of+5 parts of DISPACER interleaving agents bullets mould sphere, insulating liquid
Following whole annular space is cement tail slurry.
7. according to claim 6 five open time deep well annular pressure management method, it is characterised in that：In step s 6,
The outer wall belt compressible foam of tail pipe string.
8. according to claim 7 five open time deep well annular pressure management method, it is characterised in that：In step s 6,
With single-stage list envelope method injection cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308559.0A CN108005612A (en) | 2017-12-11 | 2017-12-11 | Five open time deep well annular pressure management method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308559.0A CN108005612A (en) | 2017-12-11 | 2017-12-11 | Five open time deep well annular pressure management method |
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| Publication Number | Publication Date |
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| CN108005612A true CN108005612A (en) | 2018-05-08 |
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| CN201711308559.0A Pending CN108005612A (en) | 2017-12-11 | 2017-12-11 | Five open time deep well annular pressure management method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927333A (en) * | 2020-07-22 | 2020-11-13 | 中国石油天然气股份有限公司 | Well structure under geological condition with fault and construction method thereof |
| CN114876439A (en) * | 2022-06-28 | 2022-08-09 | 张�林 | Geothermal well body structure for well wall heat exchange and well cementation method |
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| CN103711457A (en) * | 2012-09-29 | 2014-04-09 | 中国石油化工股份有限公司 | Design method of six-spud-in wellbore structure |
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| CN106996282A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The compound completion method of pneumatic jack trap |
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2017
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| CN102261230A (en) * | 2005-11-18 | 2011-11-30 | 雪佛龙美国公司 | Controlling the pressure within an annular volume of a wellbore |
| CN103711457A (en) * | 2012-09-29 | 2014-04-09 | 中国石油化工股份有限公司 | Design method of six-spud-in wellbore structure |
| CN106285554A (en) * | 2016-09-07 | 2017-01-04 | 中国石油大学(华东) | Wellbore pressure control system and method for the stage of cementing the well |
| CN106996282A (en) * | 2017-06-08 | 2017-08-01 | 成都北方石油勘探开发技术有限公司 | The compound completion method of pneumatic jack trap |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927333A (en) * | 2020-07-22 | 2020-11-13 | 中国石油天然气股份有限公司 | Well structure under geological condition with fault and construction method thereof |
| CN114876439A (en) * | 2022-06-28 | 2022-08-09 | 张�林 | Geothermal well body structure for well wall heat exchange and well cementation method |
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Application publication date: 20180508 |