CN108086942A - Four open time deep well annular pressure management method - Google Patents
Four open time deep well annular pressure management method Download PDFInfo
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- CN108086942A CN108086942A CN201711308576.4A CN201711308576A CN108086942A CN 108086942 A CN108086942 A CN 108086942A CN 201711308576 A CN201711308576 A CN 201711308576A CN 108086942 A CN108086942 A CN 108086942A
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- Prior art keywords
- open time
- cement
- tripping
- deep well
- management method
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- 238000007726 management method Methods 0.000 title claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 239000011083 cement mortar Substances 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 14
- 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
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000725 suspension 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 four to open time deep well annular pressure management method, comprises the following steps：S1, surface 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 opened in tripping in one, and cement injection to annular clearance simultaneously returns to mud face；S3, two open time：Drill bit is played out below bored borehole to mud face after 1500 1700m, bunch tube is opened in tripping in two, injects cement mortar toward annular space, makes to return high control 30 50m below hanger；S4, three open time：Drill bit is played out after being drilled into target zone, casing is opened in tripping in three, fills well head, and toward annulus water injection mud, the first slurry of cement returns to one and opens 110m below casing shoe；Head slurry more than annular space filling nitrogen, the insulating liquid segment length between head slurries and tail slurry is 220 230m；S5, four open time：Drill bit, tripping in tail pipe string are played out after bored borehole to target zone, tail pipe string hangs on three and opens casing shoe more than 150m, injects cement mortar, lower step operation is transferred to after solidification.The present invention solves the problems, such as that four open secondary deep well to easily cause annular space with pressure.
Description
Technical field
The invention belongs to the resources such as petroleum gas drilling engineering technical field, and in particular to one kind four 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
Annular space problem with pressure.
Traditional four open time deep well annular pressure management：(1) surface layer uses loopful sky sealing, and cement mortar returns to
Mud face；(2) one open and carry out sealing as one sees fit, some well sealing loopfuls are empty, and cement mortar returns to mud face, some wells use single stage double plugging,
The first slurry of cement is to returning to upper strata casing shoe more than 50m or so.(3) two open, three open and four open frequently with single stage double plugging, cement head
Slurry returns to upper strata casing shoe more than 150-300m.This management method may be applicable in the relatively low block of strata pressure, but on ground
Stressor layer is higher, particularly the higher stratum of air content, and it is with pressure or even squeeze and ruin casing to may result in annular space, is difficult to
The complex situations of the imagination.
Above-mentioned discussion content purpose is may be each with the present invention for being described below and/or advocating to reader's introduction
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 four 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, to solve the problems, such as that four open time deep well to easily cause annular space with pressure.
The purpose of the present invention is achieved through the following technical solutions：
One kind four is provided and opens time deep well annular pressure management method, is comprised the following steps：
S1, surface 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 opened 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 1500-1700m, bunch tube is opened in tripping in two, and two open set
Pipe string hangs on one and opens casing shoe more than 150m, then injects cement mortar toward annular space, make cement mortar return high control hanger with
Lower 30-50m；
S4, three open time：Drill bit is played out after being drilled into target zone, casing is opened in tripping in three, well head is filled, then toward annular injection cement
Slurry, the first slurry of cement return to one and open 110m below casing shoe；The first slurry more than annular space filling nitrogen of cement, the first slurry of cement and cement tail slurry
Between insulating liquid segment length for 220-230m, whole annular spaces are full of cement tail slurry below insulating liquid；
S5, four open time：Drill bit, tripping in tail pipe string are played out after bored borehole to target zone, tail pipe string hangs on three and opens casing shoe
More than 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, two outer walls for opening bunch tube carry compressible foam.
As a further improvement, seal method with single-stage list and inject cement mortar toward annular space.
As a further improvement, with single stage double plugging method toward annulus water injection mud.
As a further improvement, spacer fluid formulation is：100 parts of+5 parts of DISPACER interleaving agents of+4 portions of water PC-G80L drops
+ 45 parts of bullet modeling+96 parts of barites of sphere of dehydration agent.
As a further improvement, the outer wall belt compressible foam of tail pipe string.
As a further improvement, with single-stage list envelope method injection cement mortar.
Provided by the invention four open time deep well annular pressure management method, and 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 cement return height, and the formula of three open loop sky insulating liquids is optimized, if three open casing
There is the problem of annular space is with pressure in annular space, and the nitrogen on top and intermediate insulating liquid first can generate compression, balanced production process
The annular space of middle generation is with pressure；Secondly cement head is starched and had from upper strata casing shoe with a distance from 110m or so, therefore the annular pressure generated
It can be for delivery to stratum；
(4) two open time and four open and time use the casing with compressible foam, are conducive to prevent ganging up mutually between annular space,
Be conducive to improve four job safeties for opening time deep well.
(5) the configuration of the present invention is simple, it is easy to operate, it can be in field of oil drilling extensive use.
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 four opens time step block diagram of deep well annular pressure management method.
Fig. 2 is that the present invention four opens the structure diagram that time deep well annular pressure management method is applied to well bore.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to which those skilled in the art is made to 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 four open time deep well annular pressure management method step as shown in Figure 1, casing programme
It is as shown in Fig. 2, specific as follows：
S1, surface 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 opened in tripping in one, then water filling below bored borehole to mud face
Mud 3 to annular clearance is filled with, and cement mortar 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 1500-1700m
Two open bunch tube 4, two, which open bunch tube 4, hangs on one and opens casing shoe more than 150m or so, seals method with single-stage list and is injected toward annular space
Cement mortar 6 makes cement mortar 6 return high control in hanger 30-50m below 5, and single-stage list envelope method is injected with beneficial to raising well cementation matter
Amount；
S4, three open time：Drill bit is played out after being drilled into target zone, casing 7 is opened in tripping in three, well head is filled, then with single stage double plugging method
Toward annulus water injection mud, the first slurry 8 of cement returns to one and opens 110m below casing shoe, and single stage double plugging method, which is injected with, to be beneficial to avoid pressure leakage ground
Layer；The first slurry more than annular space filling nitrogen 9 of cement, 11 sections of length of insulating liquid between the first slurry 8 of cement and cement tail slurry 10 are 220-
230m, spacer fluid formulation are：100 parts of+4 parts of water+45 parts of PC-G80L fluid loss agents of+5 parts of DISPACER interleaving agents bullet modeling spheres+
96 parts of barites, whole annular spaces are cement tail slurry 10 below insulating liquid；Above-mentioned number is parts by weight.According to formula and dosage not
Together, under different temperature and pressure effects, a part of bullet modeling sphere can deform until broken, and bullet modeling spherical particles crush
New volume can be released afterwards, therefore the slurry volume configured can reduce.
S5, four open time：Drill bit, the tail pipe string 12 of tripping in outer wall belt compressible foam, tail are played out after bored borehole to target zone
Pipe string 12 hangs on three and opens casing shoe more than 150m or so, with single-stage list envelope method injection cement mortar 14, makes tail pipe string hanger 13
Following whole backfilling cement slurry, 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 previous four 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；Reduction by two opens time cement and returns height, is conducive to raising two and opens set
Pipe hangs leakproofness；It reduces by three and opens time cement and return height, and optimize the formula of three open loop sky insulating liquids, if three open sleeve ring and vacate
Existing annular space problem with pressure, the first nitrogen on top and intermediate insulating liquid can generate compression, be generated during balanced production
Annular space is with pressure；Secondly cement head is starched and had from upper strata casing shoe with a distance from 110m or so, therefore the annular pressure generated can transfer
To stratum；Two open with four exploitations with the casings with compressible foam, are conducive to prevent ganging up mutually between annular space, are conducive to carry
Gao Si opens the job safety of 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 variation and remodeling deviate from the scope of the present invention, otherwise should all wrap
It includes within the scope of the present invention.
Claims (7)
1. one kind four opens time deep well annular pressure management method, which is characterized in that comprises the following steps：
S1, surface 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 opened 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 1500-1700m, bunch tube is opened in tripping in two, and two open bunch tube
It hangs on one and opens casing shoe more than 150m, then inject cement mortar toward annular space, cement mortar is made to return high control 30- below hanger
50m；
S4, three open time：Drill bit is played out after being drilled into target zone, casing is opened in tripping in three, well head is filled, then toward annulus water injection mud, water
The first slurry of mud returns to one and opens 110m below casing shoe；The first slurry more than annular space filling nitrogen of cement, between the first slurry of cement and cement tail slurry
Insulating liquid segment length for 220-230m, whole annular spaces are full of cement tail slurry below insulating liquid；
S5, four open time：Drill bit, tripping in tail pipe string are played out after bored borehole to target zone, tail pipe string hangs on three and opens more than 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.
2. according to claim 1 four 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 four 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 four open time deep well annular pressure management method, it is characterised in that：In step s 4,
With single stage double plugging method toward annulus water injection mud.
5. according to claim 4 four open time deep well annular pressure management method, it is characterised in that：In step s 4,
Spacer fluid formulation is：100 parts of+4 parts of water+45 parts of PC-G80L fluid loss agents of+5 parts of DISPACER interleaving agents bullets mould+96 parts of weights of sphere
Spar.
6. according to claim 5 four open time deep well annular pressure management method, it is characterised in that：In step s 5,
The outer wall belt compressible foam of tail pipe string.
7. according to claim 6 four open time deep well annular pressure management method, it is characterised in that：In step s 5,
With single-stage list envelope method injection cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308576.4A CN108086942A (en) | 2017-12-11 | 2017-12-11 | Four open time deep well annular pressure management method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308576.4A CN108086942A (en) | 2017-12-11 | 2017-12-11 | Four open time deep well annular pressure management method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108086942A true CN108086942A (en) | 2018-05-29 |
Family
ID=62174602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711308576.4A Pending CN108086942A (en) | 2017-12-11 | 2017-12-11 | Four open time deep well annular pressure management method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108086942A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205135568U (en) * | 2015-11-05 | 2016-04-06 | 中国石油天然气集团公司 | Slow down device of pressing in oil gas well annular space area |
| WO2016093827A1 (en) * | 2014-12-10 | 2016-06-16 | Halliburton Energy Services, Inc. | Method for using managed pressure drilling with epoxy resin |
| CN106368633A (en) * | 2016-08-30 | 2017-02-01 | 中国石油大学(华东) | Annulus closed pressure control tubular column system for deepwater oil and gas producing well |
-
2017
- 2017-12-11 CN CN201711308576.4A patent/CN108086942A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016093827A1 (en) * | 2014-12-10 | 2016-06-16 | Halliburton Energy Services, Inc. | Method for using managed pressure drilling with epoxy resin |
| CN205135568U (en) * | 2015-11-05 | 2016-04-06 | 中国石油天然气集团公司 | Slow down device of pressing in oil gas well annular space area |
| CN106368633A (en) * | 2016-08-30 | 2017-02-01 | 中国石油大学(华东) | Annulus closed pressure control tubular column system for deepwater oil and gas producing well |
Non-Patent Citations (2)
| Title |
|---|
| PING CHEN 等: ""A review of the evaluation methods and control technologies for trapped annular pressure in deepwater oil and gas wells"", 《JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING》 * |
| 李中 等: ""南海西部深水钻井实践"", 《石油钻采工艺》 * |
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Application publication date: 20180529 |
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