Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
DCFirst Claim
1. An apparatus for drilling a wellbore comprising:
- a drill string having a casing portion for lining the wellbore;
a drilling assembly operatively connected to the drill string and having an earth removal member, a portion of the drilling assembly being selectively removable from the wellbore without removing the casing portion; and
a one-way cement valve disposed within the casing portion.
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Reexamination
Accused Products
Abstract
The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are described that provide for the efficient installation a cemented steel cased well wherein the drill string and the drill bit are cemented into place during one single drilling pass down into the earth. The normal mud passages or watercourses present in the rotary drill bit are used for the second independent purpose of passing cement into the annulus between the casing and the well while cementing the drill string into place during one single pass into the earth. A one-way cement valve is installed near the drill bit of the drill string that allows the cement to set up efficiently under ambiently hydrostatic conditions while the drill string and drill bit are cemented into place during one single drilling pass into the earth.
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Citations
47 Claims
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1. An apparatus for drilling a wellbore comprising:
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a drill string having a casing portion for lining the wellbore;
a drilling assembly operatively connected to the drill string and having an earth removal member, a portion of the drilling assembly being selectively removable from the wellbore without removing the casing portion; and
a one-way cement valve disposed within the casing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for lining a wellbore with a tubular comprising:
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drilling the wellbore using a drill string, the drill string having a casing portion;
locating the casing portion within the wellbore;
placing a physically alterable bonding material in an annulus formed between the casing portion and the wellbore;
establishing a hydrostatic pressure condition in the wellbore by substantially displacing the physically alterable bonding material from an interior of the tubular; and
allowing the bonding material to physically alter under the hydrostatic pressure condition. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for drilling a wellbore comprising:
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a drill string having a casing portion for lining the wellbore; and
a drilling assembly operatively connected to the drill string and having an earth removal member and a geophysical parameter sensing member. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
selectively causing a drilling trajectory to change during the drilling; and
lining the wellbore with the casing portion. - View Dependent Claims (31, 32, 33, 34)
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35. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
stabilizing the drill string while drilling the wellbore;
locating the casing portion within the wellbore;
maintaining the casing portion in a substantially centralized position in relation to a diameter of the wellbore;
placing a physically alterable bonding material in an annulus between the diameter of the wellbore and the casing portion; and
allowing the physically alterable bonding material to physically alter under an established hydrostatic pressure condition, the hydrostatic pressure condition established by substantially displacing the physically alterable bonding material from an interior of the casing portion. - View Dependent Claims (36, 37)
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38. An apparatus for drilling a wellbore comprising:
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a drill string having a casing portion for lining the wellbore;
a drilling assembly selectively connected to the drill string and having an earth removal member; and
a one-way cement valve located within the casing portion. - View Dependent Claims (39, 40)
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41. An apparatus for drilling a wellbore comprising:
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a drill having a casing portion for lining the wellbore; and
a drilling assembly operatively connected to the drill string and having an earth removal member, a portion of the drilling assembly being selectively removable from the wellbore without removing the casing portion, wherein the one-way cement valve is disposed near the earth removal member.
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42. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
selectively causing a drilling trajectory to change during the drilling;
lining the wellbore with the casing portion; and
sensing a geophysical parameter while drilling the wellbore using the drill string. - View Dependent Claims (43)
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44. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
selectively causing a drilling trajectory to change during the drilling; and
lining the wellbore with the casing portion, wherein the earth removal member is a jet deflection bit.
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45. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
selectively causing a drilling trajectory to change during the drilling; and
lining the wellbore with the casing portion, wherein selectively causing the drilling trajectory to change is accomplished by measuring while drilling.
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46. A method for drilling and lining a wellbore comprising:
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drilling the wellbore using a drill string, the drill string having an earth removal member operatively connected thereto and a casing portion for lining the wellbore;
selectively causing a drilling trajectory to change during the drilling; and
lining the wellbore with the casing portion, wherein selectively causing the drilling trajectory to change is accomplished by logging while drilling.
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47. An apparatus for drilling a wellbore comprising:
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a drill string having a casing portion for lining the wellbore;
a drilling assembly selectively connected to the drill string and having an earth removal member; and
a one-way cement valve located within the casing portion, wherein the one-way cement valve is disposed near the earth removal member.
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Specification