US20200386078A1 - Method and Apparatus for Drilling a Multilateral Well - Google Patents
Method and Apparatus for Drilling a Multilateral Well Download PDFInfo
- Publication number
- US20200386078A1 US20200386078A1 US16/436,571 US201916436571A US2020386078A1 US 20200386078 A1 US20200386078 A1 US 20200386078A1 US 201916436571 A US201916436571 A US 201916436571A US 2020386078 A1 US2020386078 A1 US 2020386078A1
- Authority
- US
- United States
- Prior art keywords
- well
- casing string
- multilateral
- production casing
- bore
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005553 drilling Methods 0.000 title claims abstract description 8
- 239000007787 solid Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 description 5
- 239000004568 cement Substances 0.000 description 2
- LXRZVMYMQHNYJB-UNXOBOICSA-N [(1R,2S,4R)-4-[[5-[4-[(1R)-7-chloro-1,2,3,4-tetrahydroisoquinolin-1-yl]-5-methylthiophene-2-carbonyl]pyrimidin-4-yl]amino]-2-hydroxycyclopentyl]methyl sulfamate Chemical compound CC1=C(C=C(S1)C(=O)C1=C(N[C@H]2C[C@H](O)[C@@H](COS(N)(=O)=O)C2)N=CN=C1)[C@@H]1NCCC2=C1C=C(Cl)C=C2 LXRZVMYMQHNYJB-UNXOBOICSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Images
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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0035—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
-
- 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
- E21B17/18—Pipes provided with plural fluid passages
-
- 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
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
Definitions
- This invention relates to a method and apparatus for drilling multilateral wells from a single well bore. Multiple production wells can be established from an initial well head by drilling additional well bores laterally of the main well bore.
- junction boxes which limit the pressure that can be used in fracing operations and are very complex. They are subject to failure and leakage. Failure of the seals is common.
- This invention overcomes the deficiencies of the prior art by the use of a solid one-piece multilateral device which is attached to a production casing string.
- the upper portion of the well is drilled to be able to accommodate two production casing strings.
- a first lateral wellbore is drilled to a planned total depth.
- a second internal wellbore is drilled, sidetracking on the low side of the first, to a planned total depth.
- Production casing is run into the second wellbore.
- a multilateral device according to the invention is secured to the production casing and is positioned adjacent to the first well bore.
- the device includes a RF tag and can be positioned so that the tool face is in the proper orientation with respect to the beginning of the first wellbore.
- a second production casing string is run into the well. As it reaches the device, the production casing is directed into the first lateral well. The casing is continued to be run in until it reaches the predetermined total depth. Guides are located on the production casing associated with the second well bore to guide the production casing associated with the first well bore.
- FIG. 1 is a schematic view of the multiple production casings and the multilateral device.
- FIG. 2 is a perspective view of an embodiment of the multilateral device.
- FIG. 3 is a perspective view of a guide member according to an embodiment of the invention.
- FIG. 4 is a schematic view of the main well casing and the lateral production casing strings.
- a single wellbore is initially drilled and an intermediate casing 41 shown in FIG. 4 is set in the well.
- the intermediate casing may be for example 133 ⁇ 8 inch casing.
- a corresponding hole is drilled below the casing to a suitable depth.
- the first well bore is drilled with the required directional tools.
- This wellbore can be a directional and or a horizontal well.
- a gyro survey is run with both drilling operations.
- An open hole caliper log along with a GR is also run to ascertain the exact depth where the sidetrack occurred in the second wellbore.
- Production casing 11 , 12 along with multilateral device 10 and guides 14 is run into the second wellbore as shown in FIG. 1 .
- a RA tag or equivalent is installed in the device.
- a GR log along with a gyro is used to position the tool on depth and orient the tool face to the same azimuth as the beginning of the “First” wellbore.
- Numerous length casing pup joints are provided on location for space out purposes.
- Multilateral device 10 includes a solid intermediate portion 23 and two end collars 22 and 21 as shown in FIG. 2 . Collars 22 and 21 are provided with bores 28 and 27 respectively to accommodate production casing 11 , 12 as shown in FIG. 1 .
- a side portion of device 10 includes a grooved portion 24 , a ramp 25 and a terminal portion 26 .
- Production casing 11 , 12 is set within the well, production casing string 13 can now be run into the lateral.
- a false rig floor can be used to ensure that casing running operations stay above the 11 , 12 string casing stub.
- Production casing 13 needs to be passed through bore 33 in guide body 31 of the guide 14 as shown in FIG. 3 .
- Guide 14 may also have rollers 32 to facilitate positioning within the wellbore.
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)
- Earth Drilling (AREA)
Abstract
Description
- This invention relates to a method and apparatus for drilling multilateral wells from a single well bore. Multiple production wells can be established from an initial well head by drilling additional well bores laterally of the main well bore.
- Current techniques for the formation of multilateral wells require the use of junction boxes which limit the pressure that can be used in fracing operations and are very complex. They are subject to failure and leakage. Failure of the seals is common.
- This invention overcomes the deficiencies of the prior art by the use of a solid one-piece multilateral device which is attached to a production casing string. The upper portion of the well is drilled to be able to accommodate two production casing strings. A first lateral wellbore is drilled to a planned total depth. A second internal wellbore is drilled, sidetracking on the low side of the first, to a planned total depth.
- Production casing is run into the second wellbore. A multilateral device according to the invention is secured to the production casing and is positioned adjacent to the first well bore. The device includes a RF tag and can be positioned so that the tool face is in the proper orientation with respect to the beginning of the first wellbore.
- Once the device is properly positioned, a second production casing string is run into the well. As it reaches the device, the production casing is directed into the first lateral well. The casing is continued to be run in until it reaches the predetermined total depth. Guides are located on the production casing associated with the second well bore to guide the production casing associated with the first well bore.
- The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of the invention will be described hereinafter that form the subject of the claims of the invention. It should be appreciated by those skilled in the art that the conception and the specific embodiments disclosed may be readily utilized as a basis for modifying or designing other embodiments for carrying out the same purposes of the present invention. It should also be realized by those skilled in the art that such equivalent embodiments do not depart from the spirit and scope of the invention as set forth in the appended claims.
- For a detailed description of the preferred embodiments of the invention, reference will now be made to the accompanying drawings in which:
-
FIG. 1 is a schematic view of the multiple production casings and the multilateral device. -
FIG. 2 is a perspective view of an embodiment of the multilateral device. -
FIG. 3 is a perspective view of a guide member according to an embodiment of the invention. -
FIG. 4 is a schematic view of the main well casing and the lateral production casing strings. - A single wellbore is initially drilled and an
intermediate casing 41 shown inFIG. 4 is set in the well. The intermediate casing may be for example 13⅜ inch casing. A corresponding hole is drilled below the casing to a suitable depth. The first well bore is drilled with the required directional tools. This wellbore can be a directional and or a horizontal well. - Next a second well bore is drilled sidetracking on the low side of the first wellbore.
- A gyro survey is run with both drilling operations. An open hole caliper log along with a GR is also run to ascertain the exact depth where the sidetrack occurred in the second wellbore.
-
Production casing multilateral device 10 andguides 14 is run into the second wellbore as shown inFIG. 1 . - A RA tag or equivalent is installed in the device. Prior to the Multilateral Device exiting the intermediate casing, a GR log along with a gyro is used to position the tool on depth and orient the tool face to the same azimuth as the beginning of the “First” wellbore. Numerous length casing pup joints are provided on location for space out purposes. Once the multilateral device is oriented properly and on depth, the casing string is slowly slacked of (i.e., ensuring casing does not turn) and the device positioned as planned. The casing string is set in dual slips on the rig floor to suspend it.
-
Multilateral device 10 includes a solidintermediate portion 23 and twoend collars FIG. 2 .Collars bores production casing FIG. 1 . A side portion ofdevice 10 includes agrooved portion 24, aramp 25 and aterminal portion 26. - Once
production casing production casing string 13 can now be run into the lateral. A false rig floor can be used to ensure that casing running operations stay above the 11, 12 string casing stub.Production casing 13 needs to be passed throughbore 33 inguide body 31 of theguide 14 as shown inFIG. 3 .Guide 14 may also haverollers 32 to facilitate positioning within the wellbore. - As
production casing 13 contactsmultilateral device 10, it will engagegroove 24 and ride upramp 25 so as to be laterally deflected into the first previously drilled wellbore. - Once string “13” is in place and set in the dual slips on the floor, cement heads are made up and bottoms up is circulated via both strings. The strings are then cemented in place simultaneously, bringing top of cement into 13⅜″ intermediate string. The BOP's are picked up and dual slips are set in the wellhead to suspend both strings. The BOP's are nippled down and a dual, 41/16″, 10 kpsi (i.e., or as required) tree is installed and tested. The rig is moved off and the well is now prepared for dual completion.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/436,571 US20200386078A1 (en) | 2019-06-10 | 2019-06-10 | Method and Apparatus for Drilling a Multilateral Well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/436,571 US20200386078A1 (en) | 2019-06-10 | 2019-06-10 | Method and Apparatus for Drilling a Multilateral Well |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200386078A1 true US20200386078A1 (en) | 2020-12-10 |
Family
ID=73650286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/436,571 Abandoned US20200386078A1 (en) | 2019-06-10 | 2019-06-10 | Method and Apparatus for Drilling a Multilateral Well |
Country Status (1)
Country | Link |
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US (1) | US20200386078A1 (en) |
-
2019
- 2019-06-10 US US16/436,571 patent/US20200386078A1/en not_active Abandoned
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AS | Assignment |
Owner name: ALLAMON PROPERTIES LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALLAMON, JERRY P.;KOENIG, RICHARD;REEL/FRAME:050810/0580 Effective date: 20190723 |
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Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
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Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |