KR101711471B1

KR101711471B1 - Apparatus for drilling

Info

Publication number: KR101711471B1
Application number: KR1020150119959A
Authority: KR
Inventors: 이동건; 김현구; 배성준; 하영열
Original assignee: 삼성중공업 주식회사
Priority date: 2015-08-26
Filing date: 2015-08-26
Publication date: 2017-03-02

Abstract

A drilling apparatus is provided. According to one aspect of the present invention, the drilling apparatus comprises: a first compensation unit correcting a vertical movement of a first top driver; a second compensation unit correcting a vertical movement of a second top drive; and a synchronization unit connected to the first compensation unit and the second compensation unit to synchronize the vertical movements corrected by the first compensation unit and the second compensation unit, respectively.

Description

Apparatus for drilling

The present invention relates to a drilling apparatus, and more particularly, to a drilling apparatus for collecting resources from a well or a well located in a seabed.

With the rapid development of international industrialization and industry, the use of earth resources such as oil is gradually increasing, and thus the stable production and supply of crude oil is becoming an increasingly important issue globally.

For this reason, the development of marginal heredity or deep-sea oil field, which had been neglected due to economic difficulties, has become economical in recent years. Therefore, along with the development of submarine mining technology, floating drilling facilities equipped with drilling facilities suitable for the development of such oilfields have been developed.

In order to obtain gas or crude oil from a submerged well or oil well, drilling is required to drill holes extending to the well or well.

Floating drilling rigs such as floating production storage and offloading units (FPSO) or drill ships include a top drive to move the pipe up and down.

Korean Patent Publication No. 10-2011-0029965 (Mar. 23, 2011)

A problem to be solved by the present invention is to provide a drilling apparatus capable of preventing interference between structures and occurrence of safety accidents.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a drilling apparatus comprising a first compensation unit for correcting up-and-down movement of a first top drive, a second compensation unit for correcting up- And a synchronization unit connected to the first and second compensation units, for synchronizing the up and down fluctuations corrected by the first and second compensation units, respectively.

The synchronizing unit may further include a first cylinder connected to the first compensating unit, a second cylinder connected to the second compensating unit, and a second cylinder connected to the second compensating unit, wherein the first cylinder is located on one side and the second cylinder is located on the other side And may include a fluid tube that receives fluid therein.

Further, the fluid may be a non-compressible medium.

Further, the first movement distance at which the first cylinder moves and the second movement distance at which the second cylinder moves may be the same.

Other specific details of the invention are included in the detailed description and drawings.

According to the drilling apparatus of the present invention as described above, one or more of the following effects can be obtained.

According to the present invention, it is possible to prevent the occurrence of interference and safety accidents between structures.

1 is a schematic view of an offshore structure according to an embodiment of the present invention.
2 is a schematic view of a drilling apparatus according to an embodiment of the present invention.
3 is a schematic diagram of a synchronization unit according to an embodiment of the present invention.
4 and 5 are operation diagrams of a synchronization unit according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

It is to be understood that when an element or layer is referred to as being "on" or " on "of another element or layer, All included. On the other hand, a device being referred to as "directly on" or "directly above" indicates that no other device or layer is interposed in between.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" May be used to readily describe a device or a relationship of components to other devices or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions. The elements can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

One element is referred to as being "connected to " or" coupled to "another element, either directly connected or coupled to another element, One case. On the other hand, when one element is referred to as being "directly connected to" or "directly coupled to " another element, it does not intervene another element in the middle. Like reference numerals refer to like elements throughout the specification. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. A description thereof will be omitted.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view of an offshore structure according to an embodiment of the present invention.

Referring to FIG. 1, an offshore structure 1 according to an embodiment of the present invention includes a drilling derrick 10 to which a drilling installation is mounted. Specifically, the pipe loaded on the offshore structure is transported to the derrick 10 through a lifting means such as a crane, and the drilling apparatus installed on the derrick 10 performs the drilling operation using the transported pipe. At this time, the derrick 10 can form a truss structure by the assembly of the straight member and the inclined member, and can be installed vertically on the door frame of the offshore structure.

In an embodiment of the present invention, the offshore structure includes a jack-up drilling rig, a jack-up rig, a drill rig, a barge, a marine work line, a marine plant and a liquefied natural gas-floating production storage offloading (LNG-FPSO) ), And may include all structures installed in the ocean as well as vessels capable of self-propulsion.

2 is a schematic view of a drilling apparatus according to an embodiment of the present invention.

Referring to FIG. 2, a drilling apparatus according to an embodiment of the present invention includes a first tower drive 140, a first compensation unit 130, a second tower drive 240, a second compensation unit 230, Includes a synchronization unit 300, but does not exclude additional configurations.

Hereinafter, a drilling apparatus according to an embodiment of the present invention will be described with reference to an example including two top drives for a continuous drilling operation, but the present invention is not limited thereto and may include three or more top drives You may.

The first and second top drives 140 and 240 are installed inside the derrick 10 and grasp the drill pipe to raise and lower the drill pipe and drill strings are assembled by assembling the drill pipe .

The first through fourth drawwheels 110, 112, 210, and 212 are installed on a drill floor 12, and the first and second hoisting wires are pulled or loosened to form first and second drawing wires And moves the top drives 140 and 240 up and down.

The first and second compensation units 130 and 230 correct the upward and downward movements of the first and second top drives 140 and 240. At this time, the first and second compensation units 130 and 230 can be designed so as to minimize the upside-down heave of the offshore structure 1 being affected by the sea condition.

2, one end of the first hoisting wire is connected to a first drawwheel 112, and the first hoisting wire is sequentially connected to a first fixed pulley (not shown) A second fixed sheave 132 of the first compensation unit 130, a third fixed sheave 122 installed on the upper portion of the derrick 10, a third fixed sheave 122 of the fourth compensation unit 130, And the other end of the first hoisting wire is connected to the second drawwheel 110. The second hoistway wire is connected to the fixed pulley 136 and the fifth fixed sheave 124 disposed at the upper portion of the derrick 10, At this time, the first moving sheave 134 of the first compensation unit 130 may be connected to the second moving sheave 142 of the first top drive 140. Therefore, the first top drive 140 is moved up and down due to the operation of the first and second drawwalls 110 and 122 and the first compensation unit 130. [

2, one end of the second hoisting wire is connected to a third drawwheel 212, and the second hoisting wire is sequentially connected to a sixth fixed sheave (not shown) The seventh fixed pulley 232 of the second compensation unit 230 and the eighth fixed pulley 222 installed on the top of the derrick 10 and the ninth fixed And the other end of the second hoisting wire is connected to the fourth drawwheel 210. The fourth drawwheel 210 is connected to the third drawwheel 210 via the pulley 236 and the tenth fixed pulley 224, At this time, the third traveling pulley 234 of the second compensation unit 230 may be connected to the fourth traveling pulley 242 of the second tower drive 240. Therefore, the first top drive 240 is moved up and down due to the operation of the third and fourth drawwheels 210, 222 and the second compensation unit 230. [

If the first and second top drives 140 and 240 can be moved up and down, the first and second top drives 140 and 240, the first through fourth drawwatches 110 and 110, 112, 210, and 222, and the first and second compensation units 130 and 230 are connected to each other, the present invention is not limited thereto and may be variously modified.

3 is a schematic diagram of a synchronization unit according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the synchronization unit 300 is connected to the first and second compensation units 130 and 230 so that the first and second compensation units 130 and 230, respectively, Synchronize. More specifically, the synchronization unit 300 includes a first cylinder 320 connected to the first compensation unit 130, a second cylinder 322 connected to the second compensation unit 230, And a fluid pipe 310 in which the second cylinder 322 is positioned on the other side and the fluid is received therein. At this time, the fluid may be formed of a non-compression medium that is not compressed according to the movement of the first and second cylinders 320 and 322. The first moving distance d1 between the first cylinder 320 and one end of the fluid pipe 310 and the second moving distance d2 between the second cylinder 322 and the other end of the fluid pipe 310 The sum can always be constant.

4 and 5 are operation diagrams of a synchronization unit according to an embodiment of the present invention.

For example, referring to FIG. 4, when the first cylinder 320 is lowered by the operation of the first compensation unit 130, the second cylinder 322 descends as the first cylinder 320 is lowered . Further, when the second cylinder 322 is lowered by the operation of the second compensation unit 230, the first cylinder is lowered as the second cylinder 322 is lowered. The third moving distance d3 between the first cylinder 320 and one end of the fluid pipe 310 and the fourth moving distance d4 between the second cylinder 322 and the other end of the fluid pipe 310, Is equal to the sum of the first movement distance d1 and the second movement distance d2.

5, when the first cylinder 320 rises by the operation of the first compensation unit 130, the second cylinder 322 rises as the first cylinder 320 rises. Further, when the second cylinder 322 is raised by the operation of the second compensation unit 230, the first cylinder rises as the second cylinder 322 rises. At this time, the fifth moving distance d5 between the first cylinder 320 and one end of the fluid tube 310 and the sixth moving distance d6 between the second cylinder 322 and the other end of the fluid tube 310, Is equal to the sum of the first movement distance d1 and the second movement distance d2 or the sum of the third movement distance d3 and the fourth movement distance d4.

Therefore, not only the size of the first compensation unit 130 for correcting up-and-down shaking but also the size of the second compensation unit 230 for correcting the vertical fairness can be synchronized, and the sink can be aligned.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Offshore structures
10: Derrick
130: first compensation unit
140: First Top Drive
230: second compensation unit
240: second tower drive
300: synchronization unit

Claims

A first compensation unit for correcting up-and-down movement of the first top drive;
A second compensation unit for correcting the up-and-down motion of the second top drive; And
And a synchronization unit coupled to the first and second compensation units, for synchronizing the up-and-down motion corrected by the first and second compensation units, respectively.

The method according to claim 1,
Wherein the synchronization unit comprises:
A first cylinder connected to the first compensation unit, a second cylinder connected to the second compensation unit, and a second cylinder positioned on one side and the second cylinder positioned on the other side, A drilling device, comprising a pipe.

3. The method of claim 2,
Wherein the fluid is a non-compressible medium.

3. The method of claim 2,
Wherein the first movement distance at which the first cylinder moves is the same as the second movement distance at which the second cylinder moves.