CN105239925A - Method for completing vertical well side tracking through one-time drilling - Google Patents
Method for completing vertical well side tracking through one-time drilling Download PDFInfo
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- CN105239925A CN105239925A CN201510721910.3A CN201510721910A CN105239925A CN 105239925 A CN105239925 A CN 105239925A CN 201510721910 A CN201510721910 A CN 201510721910A CN 105239925 A CN105239925 A CN 105239925A
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- sidetracking
- drill bit
- single bend
- pdc drill
- straight hole
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Abstract
The invention relates to the technical field of vertical well side tracking methods and discloses a method for completing vertical well side tracking through one-time drilling. The method comprises the following steps: selecting a side tracking well section, filling cement in a vertical well to form a cement layer, sealing the vertical well with the cement layer, connecting a PDC drill bit, a single bent screw, a non-magnetic drilling tool and other drilling tools together from the bottom up, putting the PDC drill bit, the single bent screw, the non-magnetic drilling tool and other drilling tools in the vertical well, and drilling in the cement surface downwards by the PDC drill bit under the joint rotary action of ground rotary equipment and the single bent screw. With adoption of the method disclosed by the invention, the side tracking operation of the vertical well can be completed through putting the drilling tool in the vertical well at a time; compared with the side tracking operation of the vertical well in the prior art which requires putting the drilling tool in the vertical well for three times, the method disclosed by the invention greatly shortens the side tracking operation time of the vertical well.
Description
Technical field
the present invention relates to the method and technology field of straight hole sidetracking, is a kind of method of having bored straight hole sidetracking for a time.
Background technology
in oil drilling construction, need to carry out sidetracking to drilling straight-hole eye according to actual conditions.In straight hole sidetracking process in the past, after by lower well section cemented up, need three brills just can complete sidetracking construction.At present, straight hole sidetracking construction method is as shown in following: under enter simple drill
,simple drill is adopted to bore cement surface.When creeping into sidetracked hole section
,because needs are at sidetracked hole section sidetracking, therefore, carry on simple drill is carried out and be replaced by sidetracking drilling tool (bent sub, straight screw rod and tricone bit), then sidetracking is carried out by entering sidetracked hole section under sidetracking drilling tool, when employing sidetracking drilling tool sidetracking makes new advances stratum, on carry sidetracking drilling tool and sidetracking drilling tool be replaced by simple drill, then by enter under simple drill side tracking point carry out follow-up creep into operation until complete new well creep into operation.More than be the process of having bored sidetracking construction for three times, just can complete sidetracking operation owing to entering three brills under needs, therefore, sidetracking workload is comparatively large, extends the time of sidetracking operation, reduces the efficiency of construction of sidetracking.
Summary of the invention
the invention provides a kind of method of having bored straight hole sidetracking for a time, overcome the deficiency of above-mentioned prior art, its needs that effectively can solve the existence of existing straight hole sidetracking method bore the problem that just can complete sidetracking three times.
technical scheme of the present invention is realized by following measures: a kind of method of having bored straight hole sidetracking for a time, carry out as follows: select sidetracked hole section, in straight hole, inject cement and form cement layer, straight hole is sealed by cement layer, by PDC drill bit, single bend PDM, non-magnetic drilling tool and other drilling tool link together from bottom to top, then, by PDC drill bit, single bend PDM, enter in straight hole under non-magnetic drilling tool and other drilling tool, PDC drill bit creeps into downwards from cement surface under the common turning effort of ground slewing and single bend PDM, when PDC bit drills proceeds to sidetracked hole section, stop the rotation of ground slewing, PDC drill bit carries out sidetracking in sidetracked hole section under the independent driving of single bend PDM, when sidetracking makes new advances well, start ground slewing, PDC drill bit under the synergy of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation, wherein, the curved point of single bend PDM and the distance of PDC drill bit are 1.4 meters to 2.0 meters, single bend PDM to be bent angle the be single bend PDM of 1.5 °, in the process of sidetracking, when the material returned out is all landwaste, sidetracking makes new advances well.
here is the further optimization and/or improvements to foregoing invention technical scheme:
above-mentioned little after 60 hours when injecting the cement Hou Ning 48 in straight hole, PDC drill bit creeps into downwards to sidetracked hole section from cement surface under the driving of ground slewing and single bend PDM.
when the above-mentioned horizontal range when the new well that sidetracking goes out and straight hole is greater than 0.5 meter, PDC drill bit under the common driving of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation.
method of having bored straight hole sidetracking for one time of the present invention can enter the sidetracking operation that drilling tool completes straight hole under one time, complete for the operation of straight hole sidetracking according to the method for to have bored straight hole sidetracking for a time of the present invention relative to entering drilling tool under needing three times at present in addition, decrease the number of times putting brill and the workload putting brill, thus the time of straight hole sidetracking operation is significantly reduced according to the method for to have bored straight hole sidetracking for a time of the present invention, improve the efficiency of construction of straight hole sidetracking operation.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
below in conjunction with embodiment, the invention will be further described:
embodiment 1: this has bored the method for straight hole sidetracking for one time, carry out as follows: select sidetracked hole section, in straight hole, inject cement and form cement layer, straight hole is sealed by cement layer, by PDC drill bit, single bend PDM, non-magnetic drilling tool and other drilling tool link together from bottom to top, then, by PDC drill bit, single bend PDM, enter in straight hole under non-magnetic drilling tool and other drilling tool, PDC drill bit creeps into downwards from cement surface under the common turning effort of ground slewing and single bend PDM, when PDC bit drills proceeds to sidetracked hole section, stop the rotation of ground slewing, PDC drill bit carries out sidetracking in sidetracked hole section under the independent driving of single bend PDM, when sidetracking makes new advances well, start ground slewing, PDC drill bit under the synergy of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation, wherein, the curved point of single bend PDM and the distance of PDC drill bit are 1.4 meters to 2.0 meters, single bend PDM to be bent angle the be single bend PDM of 1.5 °, in the process of sidetracking, when the material returned out is all landwaste, sidetracking makes new advances well.The method of having bored straight hole sidetracking for one time according to the present embodiment can enter the sidetracking operation that drilling tool completes straight hole under one time, the method of having bored straight hole sidetracking for one time according to the present embodiment completes for the operation of straight hole sidetracking relative to entering drilling tool under needing three times at present, decrease the time and workload of boring twice, namely the number of times putting brill and the workload putting brill is decreased, the method of having bored straight hole sidetracking for one time namely according to the present embodiment significantly reduces the time of straight hole sidetracking operation, improve the efficiency of construction of straight hole sidetracking operation.The curved point of single bend PDM and the distance of PDC drill bit are that the setting of 1.4 meters to 2.0 meters is convenient to drilling tool produces larger lateral displacement in sidetracking process, are conducive to the carrying out of sidetracking operation.Bent angle is that the setting of the single bend PDM of 1.5 ° can make drilling tool produce higher sidetracking power, is conducive to the carrying out of sidetracking operation, and the single bend PDM that bent angle is 1.5 ° can make PDC drill bit continue to rotate compound drilling in follow-up creeping in operation.PDC drill bit, single bend PDM, non-magnetic drilling tool and ground slewing are existing known technology.Other drilling tool comprises drilling rod, drill collar and link etc.When PDC bit drills proceeds to sidetracked hole section, stop the rotation of ground slewing, because single bend PDM has camber, part below the curved point of single bend PDM rotates, thus drive PDC drill bit to creep into, PDC drill bit is crept in sidetracked hole section side direction under the independent driving of single bend PDM, thus PDC drill bit to be made new advances well at sidetracked hole section sidetracking.
embodiment 2: this has bored the method for straight hole sidetracking for one time, carry out as follows: select sidetracked hole section, in straight hole, inject cement and form cement layer, straight hole is sealed by cement layer, by PDC drill bit, single bend PDM, non-magnetic drilling tool and other drilling tool link together from bottom to top, then, by PDC drill bit, single bend PDM, enter in straight hole under non-magnetic drilling tool and other drilling tool, PDC drill bit creeps into downwards from cement surface under the common turning effort of ground slewing and single bend PDM, when PDC bit drills proceeds to sidetracked hole section, stop the rotation of ground slewing, PDC drill bit carries out sidetracking in sidetracked hole section under the independent driving of single bend PDM, when sidetracking makes new advances well, start ground slewing, PDC drill bit under the synergy of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation, wherein, the curved point of single bend PDM and the distance of PDC drill bit are 1.4 meters or 2.0 meters, single bend PDM to be bent angle the be single bend PDM of 1.5 °, in the process of sidetracking, when the material returned out is all landwaste, sidetracking makes new advances well.
embodiment 3: be with the difference of above-described embodiment, when injecting, the cement Hou Ning 48 in straight hole is little after 60 hours, and PDC drill bit creeps into downwards to sidetracked hole section from cement surface under the driving of ground slewing and single bend PDM.
embodiment 4: be with the difference of above-described embodiment, when the horizontal range of the new well that sidetracking goes out and straight hole is greater than 0.5 meter, PDC drill bit under the common driving of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation.
in sum, the method of having bored straight hole sidetracking according to one time of the present invention can enter the sidetracking operation that drilling tool completes straight hole under one time, complete for the operation of straight hole sidetracking according to the method for to have bored straight hole sidetracking for a time of the present invention relative to entering drilling tool under needing three times at present in addition, decrease the number of times putting brill and the workload putting brill, thus the time of straight hole sidetracking operation is significantly reduced according to the method for to have bored straight hole sidetracking for a time of the present invention, improve the efficiency of construction of straight hole sidetracking operation.
above technical characteristic constitutes embodiments of the invention, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (3)
1. one kind has been bored the method for straight hole sidetracking for one time, it is characterized in that carrying out as follows: select sidetracked hole section, in straight hole, inject cement and form cement layer, straight hole is sealed by cement layer, by PDC drill bit, single bend PDM, non-magnetic drilling tool and other drilling tool link together from bottom to top, then, by PDC drill bit, single bend PDM, enter in straight hole under non-magnetic drilling tool and other drilling tool, PDC drill bit creeps into downwards from cement surface under the common turning effort of ground slewing and single bend PDM, when PDC bit drills proceeds to sidetracked hole section, stop the rotation of ground slewing, PDC drill bit carries out sidetracking in sidetracked hole section under the independent driving of single bend PDM, when sidetracking makes new advances well, start ground slewing, PDC drill bit under the synergy of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation, wherein, the curved point of single bend PDM and the distance of PDC drill bit are 1.4 meters to 2.0 meters, single bend PDM to be bent angle the be single bend PDM of 1.5 °, in the process of sidetracking, when the material returned out is all landwaste, sidetracking makes new advances well.
2. method of having bored straight hole sidetracking for a time according to claim 1, it is characterized in that when injecting the cement Hou Ning 48 in straight hole little after 60 hours, PDC drill bit creeps into downwards to sidetracked hole section from cement surface under the driving of ground slewing and single bend PDM.
3. method of having bored straight hole sidetracking for a time according to claim 1 and 2, when it is characterized in that the horizontal range of new well when sidetracking goes out and straight hole is greater than 0.5 meter, PDC drill bit under the common driving of ground slewing and single bend PDM, continue compound drilling until complete new well creep into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510721910.3A CN105239925A (en) | 2015-10-30 | 2015-10-30 | Method for completing vertical well side tracking through one-time drilling |
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| CN201510721910.3A CN105239925A (en) | 2015-10-30 | 2015-10-30 | Method for completing vertical well side tracking through one-time drilling |
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| CN105239925A true CN105239925A (en) | 2016-01-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111550185A (en) * | 2020-05-15 | 2020-08-18 | 洲际海峡能源科技有限公司 | Drilling method using screw and rotary steering tool combination system |
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| CN111550185A (en) * | 2020-05-15 | 2020-08-18 | 洲际海峡能源科技有限公司 | Drilling method using screw and rotary steering tool combination system |
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| CB02 | Change of applicant information |
Address after: 830026 West directional drilling technology service company, No. 68, South Central Road, Urumqi Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 West drilling directional well company, No. 98 Youyi Road, the Xinjiang Uygur Autonomous Region, Karamay Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |