CN108049816A - The narrow pressure window well four of deep water opens time Casing Program Design Method - Google Patents
The narrow pressure window well four of deep water opens time Casing Program Design Method Download PDFInfo
- Publication number
- CN108049816A CN108049816A CN201711310128.8A CN201711310128A CN108049816A CN 108049816 A CN108049816 A CN 108049816A CN 201711310128 A CN201711310128 A CN 201711310128A CN 108049816 A CN108049816 A CN 108049816A
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- China
- Prior art keywords
- casing
- drill bit
- drilled
- tripping
- design 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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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
- E21B7/185—Drilling by liquid or gas jets, with or without entrained pellets underwater
Abstract
The invention discloses a kind of narrow pressure window wells four of deep water to open time Casing Program Design Method, comprises the following steps：S1, surface layer：Sprayed and crept into using rock bit, when while drilling under marine riser and carry out anti-rotation and fix；S2, one open time：Injection be drilled surface layer and under after complete marine riser, with 600 700m below the roller bit cutting to mud face, rise and be drilled, tripping in outer diameter is 508 533.4mm of Φ, and wall thickness is the one of 28.575mm to open casing, injects cement slurry cementing；S3, two open time：It is drilled into eccentric drilling device below mud face and drill bit is played out after 1500 1700m meters, casing is opened in tripping in two, injects cement slurry cementing；S4, three open time：It is drilled into using drill bit below mud face and drill bit is played out after 2400 2500m meters, casing is opened in tripping in three, injects cement slurry cementing；S5, four open time：It is drilled into using drill bit after target zone and plays out drill bit, be transferred to completion practice.The present invention solves the problems, such as that conventional four open that time casing programme security is not high and cost control is unreasonable.
Description
Technical field
The invention belongs to the resources such as petroleum gas drilling engineering technical field, and in particular to a kind of narrow pressure of deep water
Power window well four opens time Casing Program Design Method.
Background technology
Casing programme refers to level, depth and the corresponding borehole size of reservoir more than well section palpus tripping in specialized barrel.
The design method of casing programme, with the crustal stress size in region, stress direction, caving pressure size, fracture pressure size,
The difference of the factors such as property of drilling fluid and well-drilling technology, design method are also different.But if well structure design is not
Rationally, leakage, even bit freezing, a series of complex situation such as blowout may be caused, seriously affect drilling well timeliness and drilling safety.
Narrow pressure (density) window refers to pressure differential deltap p (Δ p=pf (fracture pressure)-pp (pore pressure) or Δ p=pf-
Pb (caving pressure)) it approaches, equal to or less than cyclic pressure dissipation and the situation of Δ p≤0.
In drilling process, narrow pressure (density) window well is easy to that complex situations occur, once complex situations occur even
, it is necessary to which substantial amounts of human and material resources and financial resources is spent to be handled during accident, and without good solution method, treatment effeciency
Low, long in time limit, it is invalid to be also possible to sometimes, often final well filling sidetracking.
Domestic deep water tradition four opens time casing programme：
Bit program：Φ 914.4mm bore surface layer, are followed successively by Φ 660.4mm and bore one and open time, and Φ 444.5mm bore two and open time, Φ
311.15mm bores three and opens time, and Φ 215.9mm bore four and open time.
Casing program：Φ 762mm are followed successively by Φ 508mm and open time casing for one, Φ 339.7mm are as two as marine riser
Time casing is opened, Φ 244.5mm open casing as three, and four open time usual not setting of casing.
Wall thickness program is：Marine riser Φ 25.4mm, remaining 12.7mm.
The program is applicable in the area that geological conditions is less complicated, sea situation is relatively good, but sea situation is severe, geological conditions is multiple
It is miscellaneous regional and be not suitable with, and this method is unfavorable for the control of deepwater drilling cost.
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
A kind of narrow pressure window well four of deep water is provided and is opened time it is an object of the invention to avoid deficiency of the prior art
Casing Program Design Method opens time casing programme to solve the narrow pressure window well of deep water conventional four and complex situations and drilling well easily occurs
The problem of cost control is unreasonable.
The purpose of the present invention is achieved through the following technical solutions：
A kind of narrow pressure window well four of deep water is provided and opens time Casing Program Design Method, is comprised the following steps：
S1, surface layer：Sprayed and crept into using rock bit, when while drilling under marine riser and carry out anti-rotation and fix；
S2, one open time：Injection be drilled surface layer and under after complete marine riser, with 600- below the roller bit cutting to mud face
700m rises and is drilled, and tripping in outer diameter is Φ 508-533.4mm, and wall thickness opens casing for the one of 28.575mm, injects cement slurry cementing；
S3, two open time：It being drilled into eccentric drilling device below mud face and drill bit is played out after 1500-1700m meters, casing is opened in tripping in two,
Inject cement slurry cementing；
S4, three open time：It is drilled into using drill bit below mud face and drill bit is played out after 2400-2500m meters, casing is opened in tripping in three, note
Enter cement slurry cementing；
S5, four open time：It is drilled into using drill bit after target zone and plays out drill bit, be transferred to completion practice.
As a further improvement, in step sl, drilling is sprayed using the tricone bit of Φ 660.4-685.8mm,
901.1-914.4mm under when while drilling, wall thickness are the marine riser of 34.925-38.1mm and carry out anti-rotation and fix.
As a further improvement, in step s 2, tubing string in tripping in injects cement slurry cementing with interior tubing string method.
As a further improvement, in step s3, with it is maximum can a diameter of Φ 457.2mm of bored borehole eccentric drilling device,
Φ 457.2mm wellbores are bored, tripping in outer diameter is Φ 406.4mm after acting drill bit, and wall thickness opens casing for the two of 23.1-25.4mm.
As a further improvement, in step s 4, pierced using the drill bit of a diameter of Φ 311.15-330.2mm, rise
Tripping in outer diameter is Φ 245-254mm after drill bit, and wall thickness opens casing for the three of 19.05-23.1mm.
As a further improvement, in step s 5, pierced using the drill bit of a diameter of Φ 203.2-215.9mm.
The narrow pressure window well four of deep water provided by the invention opens time Casing Program Design Method, compared with prior art, solution
The narrow pressure window well of deep water of having determined conventional four is opened the problem of time casing programme security is not high and cost control is unreasonable, beneficial
Effect is：
(1) surface layer of the present invention is crept into using injection, and when boring under marine riser and anti-rotation fix, risen so as to eliminate one time
The time of the time of lower drilling tool, the time of tripping in marine riser and a well cementing operation；
(2) two open and time add sleeve outer, add two and open time abilities of the wellbore support borehole wall, are conducive to setting of casing and follow
During ring, annular space returns the raising of speed, is conducive to expand the size of follow-up wellbore.
(3) two exploitation casing Suspension Techniques, i.e., open casing by two using casing hanger and hang in surface pipe, subtract
Lack the dosage of casing, be conducive to the saving of cost.
(4) 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 the step block diagram for the design method that the narrow pressure window well four of deep water opens time casing programme.
Fig. 2 is four to open time casing programme schematic diagram.
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.
For implement the present invention, it is necessary to carry out special size drill bit and reamer development and with corresponding wellbore well bore knot
The development of the mating drilling tool of structure, casing head, cementing tool attachment and testing tool, particular content are as follows：
First, special size drill bit and eccentric drilling device
1. surface layer uses the tricone bit of Φ 660.4-685.8mm, injection drilling；
2. one opens the secondary tricone bit using a diameter of Φ 660.4-685.8mm, rotary drilling；
3. two open it is secondary it is maximum can a diameter of Φ 457.2mm of bored borehole eccentric drilling device, rotary drilling；
4. three open the secondary PDC drill bit using a diameter of Φ 311.15-330.2mm, rotary drilling；
5. four open the secondary PDC drill bit using a diameter of Φ 203.2-215.9mm, rotary drilling.
2nd, special size marine riser and casing
1. marine riser, outer diameter 901.1-914.4mm, wall thickness 34.925-38.1mm；
2. one opens casing, outer diameter is Φ 508-533.4mm, wall thickness 28.575mm；
3. two open casing, outer diameter is Φ 406.4mm, wall thickness 23.1-25.4mm；
4. three open casing, outer diameter is Φ 245-254mm, wall thickness 19.05-23.1mm.
The drill bit and the type of casing that the present invention can use have very much, but under normal circumstances, the use of drill bit are three teeth
Wheel, PDC drill bit and eccentric drilling device etc., have internal-external thickening using casing or subtract thick type, and button-type uses D- for surface layer marine riser
90/MT, one opens casing using S-60/MT, and two open casing is detained using BTC, and three exploitations are detained with VAM TOP.
The narrow pressure window well four of deep water of the present invention opens time Casing Program Design Method step as shown in Figure 1, four open time well
Body structure is as shown in Fig. 2, specific as follows：
S1, surface layer：It spuds in for the first time and drilling is sprayed using the tricone bit of Φ 660.4-685.8mm, while side is crept into
901.1-914.4mm under side, wall thickness be the marine riser 1 of 34.925-38.1mm and carry out anti-rotation and fix, seal top it is unstable,
It easily collapses, easily miss well section, bore passage is provided for next step construction and the installation branch of wellhead assembly is provided for next step construction
Support, without well cementation；
S2, one open time：Sprayed surface layer and under after complete marine riser, bored with the tricone bit of the Φ 660.4-685.8mm
600-700m below mud face is proceeded to, rises and is drilled, tripping in outer diameter is Φ 508-533.4mm, and wall thickness opens casing for the one of 28.575mm
2, then tubing string in tripping in is cemented the well with interior tubing string method injection cement mortar 3, seal top collapse, miss, water layer well section, to be next
Step construction provides bore passage and the installation support of wellhead assembly is provided for next step construction；
S3, two open time：With it is maximum can a diameter of Φ 457.2mm of bored borehole eccentric drilling device, bore Φ 457.2mm wellbores to mud
Drill bit is played out after 1500-1700m below face meters, tripping in outer diameter is Φ 406.4mm, and wall thickness opens casing for the two of 23.1-25.4mm
4, injection cement mortar 5 is cemented the well；
S4, three open time：It is pierced using the drill bit of a diameter of Φ 311.15-330.2mm, is drilled into 2400-2500m below mud face
Meter Hou Qi goes out drill bit, and tripping in outer diameter is Φ 245-254mm, and wall thickness opens casing 6 for the three of 19.05-23.1mm, injects cement mortar 7
Well cementation；
S5, four open time：It is pierced using the drill bit of a diameter of Φ 203.2-215.9mm, drill bit is played out after being drilled into target zone, turned
Enter completion practice.
The present invention is suitable for the Lingshui marine site of THE WESTERN SOUTH CHINA SEA, on the basis of time casing programme is opened in the marine site previous four, examines
Consider the marine environment and geological environment in the marine site, surface layer is crept into using injection, and when boring under marine riser and anti-rotation fix, from
And eliminate the time of the time of a drilling, the time of tripping in marine riser and a well cementing operation；Two open time increasing
Sleeve outer is added, has added two and open time ability of the wellbore support borehole wall, when being conducive to setting of casing Xun Huan, annular space returns carrying for speed
Height is conducive to expand the size of follow-up wellbore, improves the drill string mechanics safety of follow-up well section；Two exploitation Suspension Techniques are reduced
The dosage of casing, is also beneficial to the saving of cost.It meets complicated well section in addition, the present invention bores in boring in fact and complex situations occurs
When, can intricately interval be insulated with the nonstandard casing of tripping in, can be solved the problems, such as with prestissimo present in drilling, so as to reduce
Underground complex accident incidence increases economic benefit.
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 (6)
1. a kind of narrow pressure window well four of deep water opens time Casing Program Design Method, which is characterized in that comprises the following steps：
S1, surface layer：Sprayed and crept into using rock bit, when while drilling under marine riser and carry out anti-rotation and fix；
S2, one open time：Injection be drilled surface layer and under after complete marine riser, with 600-700m below the roller bit cutting to mud face,
It rises and is drilled, tripping in outer diameter is Φ 508-533.4mm, and wall thickness opens casing for the one of 28.575mm, injects cement slurry cementing；
S3, two open time：It is drilled into eccentric drilling device below mud face and drill bit is played out after 1500-1700m meters, casing is opened in tripping in two, injection
Cement slurry cementing；
S4, three open time：It is drilled into using drill bit below mud face and drill bit is played out after 2400-2500m meters, casing is opened in tripping in three, injects water
Mud is cemented the well；
S5, four open time：It is drilled into using drill bit after target zone and plays out drill bit, be transferred to completion practice.
2. the narrow pressure window well four of deep water according to claim 1 opens time Casing Program Design Method, it is characterised in that：
In step S1, using Φ 660.4-685.8mm tricone bit spray drilling, while drilling while while under 901.1-
914.4mm, wall thickness are the marine riser of 34.925-38.1mm and carry out anti-rotation and fix.
3. the narrow pressure window well four of deep water according to claim 2 opens time Casing Program Design Method, it is characterised in that：
In step S2, tubing string in tripping in injects cement slurry cementing with interior tubing string method.
4. the narrow pressure window well four of deep water according to claim 3 opens time Casing Program Design Method, it is characterised in that：
In step S3, with it is maximum can a diameter of Φ 457.2mm of bored borehole eccentric drilling device, Φ 457.2mm wellbores are bored, under rising after drill bit
Enter outer diameter for Φ 406.4mm, wall thickness opens casing for the two of 23.1-25.4mm.
5. the narrow pressure window well four of deep water according to claim 4 opens time Casing Program Design Method, it is characterised in that：
It in step S4, is pierced using the drill bit of a diameter of Φ 311.15-330.2mm, tripping in outer diameter is Φ 245- after acting drill bit
254mm, wall thickness open casing for the three of 19.05-23.1mm.
6. the narrow pressure window well four of deep water according to claim 5 opens time Casing Program Design Method, it is characterised in that：
In step S5, pierced using the drill bit of a diameter of Φ 203.2-215.9mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711310128.8A CN108049816A (en) | 2017-12-11 | 2017-12-11 | The narrow pressure window well four of deep water opens time Casing Program Design Method |
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| CN201711310128.8A CN108049816A (en) | 2017-12-11 | 2017-12-11 | The narrow pressure window well four of deep water opens time Casing Program Design Method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083596A (en) * | 2018-08-02 | 2018-12-25 | 中国海洋石油集团有限公司 | The narrow pressure window well safety drilling method of deep water |
| CN109267944A (en) * | 2018-10-24 | 2019-01-25 | 中海石油(中国)有限公司 | A kind of deep water surface conductor pipe device |
| CN115324544A (en) * | 2021-05-10 | 2022-11-11 | 中国石油天然气股份有限公司 | Well completion method for four-well-body structure of super heavy oil reservoir SAGD horizontal production well |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109083596A (en) * | 2018-08-02 | 2018-12-25 | 中国海洋石油集团有限公司 | The narrow pressure window well safety drilling method of deep water |
| CN109267944A (en) * | 2018-10-24 | 2019-01-25 | 中海石油(中国)有限公司 | A kind of deep water surface conductor pipe device |
| CN115324544A (en) * | 2021-05-10 | 2022-11-11 | 中国石油天然气股份有限公司 | Well completion method for four-well-body structure of super heavy oil reservoir SAGD horizontal production well |
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Application publication date: 20180518 |