CN116220549A - Flexible drilling tool for measurement and control while drilling and use method - Google Patents

Flexible drilling tool for measurement and control while drilling and use method Download PDF

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Publication number
CN116220549A
CN116220549A CN202111479178.5A CN202111479178A CN116220549A CN 116220549 A CN116220549 A CN 116220549A CN 202111479178 A CN202111479178 A CN 202111479178A CN 116220549 A CN116220549 A CN 116220549A
Authority
CN
China
Prior art keywords
flexible
drilling tool
drilling
measurement
connector body
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.)
Pending
Application number
CN202111479178.5A
Other languages
Chinese (zh)
Inventor
戴荣东
王锴
侯业贵
王健
程彦新
蒲业
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering Shengli Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Engineering Shengli Co filed Critical China Petroleum and Chemical Corp
Priority to CN202111479178.5A priority Critical patent/CN116220549A/en
Publication of CN116220549A publication Critical patent/CN116220549A/en
Pending legal-status Critical Current

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    • 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
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure

Abstract

The invention discloses a measurement and control flexible drilling tool while drilling, which comprises a guiding flexible screen pipe and a flexible drill rod inserted into the guiding flexible screen pipe, wherein the flexible drill rod is composed of a plurality of sections of flexible short sections which are sequentially hinged. The flexible drilling tool for measurement and control while drilling can realize arbitrary bending, has small curvature radius value, and is suitable for drilling operation of ultra-short radius horizontal wells with small curvature radius value.

Description

Flexible drilling tool for measurement and control while drilling and use method
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a measurement and control flexible drilling tool while drilling and a use method.
Background
The ultra-short radius horizontal well technology is a new technology for developing residual oil in the process of digging a window and sidetracking mainly in an original well casing, and the obvious difference between the technology and a conventional horizontal well is that the curvature radius is extremely small, and the conventional drilling tool cannot meet the requirement, so that the steering and the drilling feeding of the flexible drilling tool are realized through hydraulic pressure, and the continuous rock breaking and drilling are realized through non-rotating advancing of a water jet drill bit.
The conventional flexible drilling tool has small bending degree and large curvature radius value, and cannot be suitable for ultra-short radius horizontal wells with small curvature radius value.
Based on this, how to provide a flexible drilling tool which can be bent freely and has a small curvature radius value is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a flexible drilling tool for measurement and control while drilling, which can realize arbitrary bending and has small curvature radius value, and is suitable for drilling operation of an ultra-short radius horizontal well with small curvature radius value.
In order to achieve the above purpose, the invention provides a measurement and control while drilling flexible drilling tool, which comprises a guiding flexible screen pipe and a flexible drill rod inserted into the guiding flexible screen pipe, wherein the flexible drill rod is composed of a plurality of flexible short sections which are hinged in sequence
Preferably, each flexible nipple is provided with a central through hole in the axial direction, and a plurality of the central through holes form a threading channel for inserting cables.
Preferably, the cable is a single core armoured cable.
Preferably, the upper end and the lower end of the flexible drill rod are respectively connected with a hanging rotating rod and a drill bit of the vertical well section.
Preferably, the flexible pup joints are connected through a movable hinge.
Preferably, the cables are connected by a quick connector comprising a male connector and a female connector.
Preferably, the male connector comprises a male connector body, a contact pin positioned in a receiving hole of the male connector body and a first conductive core connected with the contact pin, and a first insulating layer is arranged at the joint of the contact pin and the first conductive core.
Preferably, the female connector comprises a female connector body, a contact clip positioned in a butt joint hole of the female connector body and a second conductive core connected with the contact clip, and a second insulating layer is arranged on the side wall around the butt joint hole.
The flexible drilling tool for measurement and control while drilling is adopted, the flexible drilling rod inserted in the guide flexible screen pipe is utilized, the flexible drilling rod is composed of a plurality of sections of flexible short sections which are sequentially hinged, the flexible short sections can be bent at will through hinged connection, the curvature radius value is small, the problem that the existing flexible drilling tool is small in bending degree and large in curvature radius value, and cannot be suitable for an ultra-short radius horizontal well with small curvature radius value is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a measurement-while-drilling flexible drilling tool according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a quick plug connector according to an embodiment of the present invention.
Wherein: 1. the cable comprises a hanging rotary rod, a first connecting head, a well wall, a guiding flexible screen pipe, a flexible short joint, a second connecting head, a drill bit, a female joint, a second conductive core, a contact clamp, a second insulating layer, a butt joint hole, a male joint, a receiving hole, a contact pin, a first insulating layer and a first conductive core.
Detailed Description
The core of the invention is to provide an ultra-short radius MWD measurement while drilling device so as to effectively measure the parameters of the well track of an ultra-short radius horizontal well in real time, thereby controlling the drilling of the well track more accurately.
The present invention will be described in further detail below with reference to the drawings and embodiments, so that those skilled in the art can better understand the technical solutions of the present invention.
Referring to fig. 1 to 2, the flexible drilling tool for measurement and control while drilling disclosed by the invention comprises a guiding flexible screen pipe and a flexible drill rod inserted into the guiding flexible screen pipe, wherein the flexible drill rod is composed of a plurality of flexible short sections which are hinged in sequence; the flexible drill rod is composed of a plurality of sections of flexible short sections which are hinged in sequence, so that the problems that an existing flexible drilling tool is small in bending degree and large in curvature radius value, and cannot be suitable for an ultra-short radius horizontal well with a small curvature radius value are solved.
Specifically, every the axial of flexible nipple joint all is equipped with central through-hole, and a plurality of the central through-hole forms the threading passageway that the cable was alternate, and the cable is through quick plug connector butt joint.
Specifically, the cable is a single-core armored cable and has the characteristics of high voltage resistance, water resistance, oil resistance, corrosion resistance, light weight, wear resistance and long service life.
Specifically, flexible drilling rod one end is connected with the suspension bull stick 1 of straight well section through first connector 2, and flexible drilling rod other end is connected with drill bit 7 through second connector 6, and along with drill bit 7 rotatory brill, because flexible screen pipe 4 cover of direction is outside flexible drilling rod, when the whipstock section in the drilling process of short radius horizontal well drills into and the horizontal segment drills into, can only be to one direction bending, can rapidly reach horizontal drilling from vertical drilling, plays the guide effect.
Specifically, the flexible short sections 5 are connected through a movable hinge, the flexible short sections 5 are convenient to steer in the guiding flexible screen pipe 4, and further the flexible drill rod can be bent randomly, the curvature radius is small, and the flexible drill rod is suitable for drilling operation of an ultra-short radius horizontal well with a small curvature radius value.
Specifically, the communication cable in the flexible drilling tool is inconvenient to turn due to overlong length, so that the communication cable is divided into a plurality of parts to be connected through a butt joint, the butt joint is preferably a quick plug-in connector, the quick plug-in connector is divided into a male connector and a female connector, the male connector comprises a male connector body, the male connector body is provided with a contact pin 9-2, a contact tip of the contact pin 9-2 is positioned in a butt joint hole of the male connector body, the tail of the contact pin 9-2 is connected with a first conductive core 9-4, and a first insulating layer is arranged at the joint of the contact pin 9-2 and the first conductive core.
The female connector comprises a female connector body, the female connector body is provided with a contact clip 8-2, one end of the contact clip 8-2 is positioned in the receiving hole 8-4, the other end of the contact clip is connected with a second conductive core 9-4, and the side wall around the receiving hole 8-4 is provided with a second insulating layer.
The contact clip through the female joint realizes the butt joint with the contact pin of male joint, forms the intercommunication circuit, and realizes swing joint through the butt joint hole 9-1 internal screw thread of male joint body and the external screw thread of female joint body outer end, and then reaches the locking effect, prevents that the butt joint from appearing droing, through the butt joint of male joint and female joint, links up the cable, and the signal in the pit can be through cable transmission to ground.
The concrete work is as follows: the cable inside the flexible drill rod is connected through the quick plug connector, and the flexible sieve tube 4 is sleeved outside the flexible drill rod along with rotary drilling of the drill bit 7, so that the flexible drill rod can be bent only in one direction when drilling in a deflecting section and drilling in a horizontal section in the drilling process of a short-radius horizontal well, can quickly reach horizontal drilling from vertical drilling, plays a guiding role, and is formed by hinging flexible short sections 5 in sequence, so that the flexible short section 5 can realize arbitrary bending of the flexible drill rod, has small curvature radius and is suitable for the drilling operation of the ultra-short-radius horizontal well with small curvature radius value.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a flexible drilling tool of measurement and control while drilling, includes direction flexible screen pipe (4) and alternates in the inside flexible drilling rod of direction flexible screen pipe (4), its characterized in that: the flexible drill rod is composed of a plurality of sections of flexible short sections (5) which are hinged in sequence.
2. A flexible drilling tool as claimed in claim 1, wherein each flexible nipple (5) is provided with a central through hole in the axial direction, a plurality of said central through holes forming a threading channel for the insertion of a cable.
3. A flexible drilling tool as recited in claim 2, wherein the cable is a single core armored cable.
4. A flexible drilling tool as claimed in claim 1, wherein the upper and lower ends of the flexible drill rod are connected to a hanging boom (1) and a drill bit (7) of the vertical well section, respectively.
5. A flexible drilling tool as claimed in claim 1, wherein the flexible subs (5) are connected by a living hinge.
6. A flexible drilling tool as claimed in claim 1, wherein the cables are connected by means of quick connect connectors comprising a male connector (9) and a female connector (8).
7. A flexible drilling tool as claimed in claim 6, characterized in that the male connector (9) comprises a male connector body, a contact pin (9-2) located in a receiving hole (9-1) of the male connector body, and a first conductive core (9-4) connected to the contact pin (9-2), the contact pin (9-2) being provided with a first insulating layer (9-3) at the junction with the first conductive core (9-4).
8. A flexible drilling tool as claimed in claim 6, wherein the female connector (8) comprises a female connector body, a contact clip (8-2) located in a mating hole (8-4) of the female connector body, and a second conductive core (8-1) connected to the contact clip (8-2), and a second insulating layer (8-3) is provided on the peripheral side wall of the mating hole (8-4).
CN202111479178.5A 2021-12-06 2021-12-06 Flexible drilling tool for measurement and control while drilling and use method Pending CN116220549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111479178.5A CN116220549A (en) 2021-12-06 2021-12-06 Flexible drilling tool for measurement and control while drilling and use method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111479178.5A CN116220549A (en) 2021-12-06 2021-12-06 Flexible drilling tool for measurement and control while drilling and use method

Publications (1)

Publication Number Publication Date
CN116220549A true CN116220549A (en) 2023-06-06

Family

ID=86587919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111479178.5A Pending CN116220549A (en) 2021-12-06 2021-12-06 Flexible drilling tool for measurement and control while drilling and use method

Country Status (1)

Country Link
CN (1) CN116220549A (en)

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