KR20120062069A - Drill ship with mud system and brine system - Google Patents

Drill ship with mud system and brine system Download PDF

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KR20120062069A
KR20120062069A KR1020100123159A KR20100123159A KR20120062069A KR 20120062069 A KR20120062069 A KR 20120062069A KR 1020100123159 A KR1020100123159 A KR 1020100123159A KR 20100123159 A KR20100123159 A KR 20100123159A KR 20120062069 A KR20120062069 A KR 20120062069A
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mud
brine
tank
drilling
supply line
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KR1020100123159A
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Korean (ko)
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KR101467606B1 (en
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이영철
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현대중공업 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • 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
    • E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

PURPOSE: A drill ship with mud and brine systems is provided to rapidly switch a mud circulation mode into a brine circulation mode by separately arranging a mud system and a brine system. CONSTITUTION: A drill ship with mud and brine systems comprises a mud supply line(113), a brine supply line(123), and circulation pumps(119,129). The mud supply line is connected to mud tanks(110,111) and extended to a drilling pipe. The brine supply line is connected to brine tanks(120,121) and connected to the drilling pipe. The circulation pumps are installed on the mud and brine supply lines and circulate mud and brine.

Description

머드 및 브라인 시스템을 구비한 시추선{Drill Ship with Mud System and Brine System}Drill ships with mud and brine systems {Drill Ship with Mud System and Brine System}

본 발명은 시추선에 관한 것으로서, 특히 머드를 공급하는 시스템과 브라인을 공급하는 시스템을 별개로 구비하여 머드 순환 후에 바로 브라인을 순환시킬 수 있게 구성한 것이다.
The present invention relates to a drilling vessel. In particular, a system for supplying mud and a system for supplying brine are separately provided so that the brine can be circulated immediately after the mud circulation.

일반적으로, 시추는 지층의 구조나 성상을 알기 위하여 지각 속에 지름이 작은 구멍을 뚫는 일로서, 지각 내부의 여러 정보를 얻기 위하거나 또는 석유, 천연가스, 온천, 지하수 등을 채취하기 위하여 이루어진다.In general, drilling is to drill small diameter holes in the earth's crust to understand the structure and properties of the strata, and to obtain various information within the crust or to collect oil, natural gas, hot springs, groundwater, and the like.

해상에서 해저를 시추하기 위해 동력으로 이동 가능한 드릴 십에는 시추 중에 드릴 비트의 윤할 및 마찰열을 줄이기 위해 선체에서 제조한 머드(mud) 및 브라인(brine)을 드릴 파이프를 통해 드릴 비트 쪽으로 공급한다.The drillship, which is moveable for drilling the seabed at sea, feeds mud and brine made from the hull through the drill pipe to the drill bit to reduce the lubrication and frictional heat of the drill bit during drilling.

이와 같이 시추선에는 머드를 드릴 비트 쪽으로 공급하기 위해 머드를 저장해둘 수 있는 머드탱크와, 저장된 머드탱크에서 드릴 파이프를 통해 드릴 비트까지 공급하기 위한 공급펌프 및, 공급된 머드를 받아 순환하도록 배관된 파이프들이 설치된다.As such, the drilling vessel has a mud tank for storing mud for feeding the mud to the drill bit, a supply pump for supplying the drill bit through the drill pipe from the stored mud tank, and a pipe piped to receive and circulate the supplied mud. Are installed.

한편, 시추 과정 중에 드릴링 모드에 따라 높은 비중이 필요로 할 경우에는 머드를 대신하여 브라인을 공급하여야 한다. 머드의 공급 및 순환 모드에서 브라인의 공급 및 순환 모드로 전환하기 위해서는 우선, 머드탱크에 남은 머드를 모두 청소하여 머드 탱크를 깨끗하게 비운 상태에서 머드탱크 내에서 브라인을 주입한 후 공급펌프를 통해 브라인은 드릴 비트로 공급 및 순환한다.On the other hand, if a high specific gravity is required depending on the drilling mode during the drilling process, brine should be supplied instead of the mud. In order to switch from the mud supply and circulation mode to the brine supply and circulation mode, first clean all mud in the mud tank and inject the brine into the mud tank while emptying the mud tank cleanly. Feed and circulate with drill bits.

이와 같이 종래에는 브라인을 공급 및 순환해야 할 경우에, 머드탱크에 남은 머드를 깨끗하게 청소한 후에 머드탱크에서 브라인을 주입한 후에 브라인을 공급펌프로 공급 및 순환하였기에, 머드 순환모드에서 브라인 순환모드로 변경할 경우에 시간이 많이 걸리고 인력 소모 또한 크다는 단점이 있다.
As described above, when the brine needs to be supplied and circulated, the mud tank is cleaned and then brine is injected from the mud tank, and then the brine is supplied and circulated with the supply pump. If the change is time-consuming and manpower consumption is also disadvantageous.

본 발명은 앞에서 설명한 바와 같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로서, 머드를 순환하는 머드 시스템과 브라인을 순환하는 브라인 시스템을 별도로 구성하여 머드 순환모드에서 브라인 순환모드로 전환할 때에 신속하게 전환할 수 있게 구성한 머드 및 브라인 시스템을 구비한 시추선을 제공하는 데 그 목적이 있다.The present invention has been invented to solve the problems of the prior art as described above, the mud system circulating mud and the brine system circulating the brine separately configured to switch quickly from the mud circulation mode to the brine circulation mode It is an object of the present invention to provide a drilling vessel having a mud and brine system.

상기와 같은 목적을 달성하기 위한 본 발명의 시추선은 머드를 저장해두는 제1탱크와, 상기 제1탱크에서 시추시스템으로 연장된 머드공급라인과, 브라인을 저장해두는 제2탱크와, 상기 제2탱크에서 시추시스템으로 연장된 브라인공급라인 및, 머드공급라인 및 브라인공급라인에 각각 장착되어 상기 제1탱크에 저장된 머드 및 상기 제2탱크에 저장된 브라인을 시추시스템으로 공급하는 순환펌프들을 포함하는 것을 기술적 특징으로 한다.Drilling vessel of the present invention for achieving the above object is a first tank for storing the mud, a mud supply line extending from the first tank to the drilling system, a second tank for storing the brine, and the second tank And a circulation pump for supplying the mud stored in the first tank and the brine stored in the second tank to the drilling system, respectively, mounted to the brine supply line and the mud supply line and the brine supply line. It features.

또한, 본 발명의 바람직한 실시예에 따르면, 상기 제1탱크는 제1메인탱크와 제1보조탱크로 구분되며, 상기 머드공급라인은 상기 제1메인탱크와 상기 제1보조탱크에서 연장된 제1연장라인과, 상기 제1연장라인들이 연결되어 상기 시추시스템까지 연장된 제1메인라인을 포함한다.In addition, according to a preferred embodiment of the present invention, the first tank is divided into a first main tank and a first auxiliary tank, and the mud supply line is a first extending from the first main tank and the first auxiliary tank. And an extension line and a first main line connected to the first extension lines and extending to the drilling system.

또한, 본 발명의 바람직한 실시예에 따르면, 상기 제2탱크는 제2메인탱크와 제2보조탱크로 구분되며, 상기 브라인공급라인은 상기 제2메인탱크와 상기 제2보조탱크에서 연장된 제2연장라인과, 상기 제2연장라인들이 연결되어 상기 시추시스템까지 연장된 제2메인라인을 포함한다.In addition, according to a preferred embodiment of the present invention, the second tank is divided into a second main tank and a second auxiliary tank, and the brine supply line is a second extending from the second main tank and the second auxiliary tank. An extension line and a second main line connected to the second extension lines extend to the drilling system.

또한, 본 발명의 바람직한 실시예에 따르면, 상기 시추시스템으로 공급된 머드 및 브라인은 상기 제1탱크 및 제2탱크로 회수되도록 상기 제1탱크와 제2탱크에 연장된 회수라인을 더 포함한다.
Further, according to a preferred embodiment of the present invention, the mud and brine supplied to the drilling system further includes a recovery line extending to the first tank and the second tank to be recovered to the first tank and the second tank.

앞서 설명한 바와 같이, 본 발명의 머드 및 브라인 시스템을 구비한 시추선은 머드를 드릴 비트까지 공급 및 순환하는 머드 시스템과 브라인을 드릴 비트까지 공급 및 순환하는 브라인 시스템을 별개로 갖고 있어 머드 순환에서 브라인 순환으로 전환할 때에 신속하게 전환 가능하다는 장점이 있다. 이와 같이 시스템 변환이 신속함에 따라 시추작업을 지속적으로 추진할 수 있어 시추에 소요되는 시간을 단축할 수 있어 경제적이라는 장점이 있다.
As described above, the drilling vessel provided with the mud and brine system of the present invention has a mud system for supplying and circulating the mud to the drill bit and a brine system for supplying and circulating the brine to the drill bit, so that the brine circulation in the mud circulation There is an advantage that can be switched quickly when switching to. As such, the rapid conversion of the system, the drilling work can be continuously carried out, and thus the time required for drilling can be shortened, which is economical.

도 1은 본 발명에 따른 시추선의 머드 시스템과 브라인 시스템을 나타낸 개념도이다.1 is a conceptual diagram illustrating a mud system and a brine system of a drilling vessel according to the present invention.

아래에서는 본 발명에 따른 머드 및 브라인 시스템을 구비한 시추선의 양호한 실시예를 첨부한 도면을 참조로 하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a drilling vessel having a mud and brine system according to the present invention will be described in detail.

도 1에 도시된 바와 같이, 시추선에는 머드를 저장해두는 탱크(110, 111)들에 연결되며 시추파이프로 연장된 머드공급라인(113)과, 브라인을 저장해두는 탱크(120, 121)들에 연결되며 시추파이프로 연결된 브라인공급라인(123)과, 각 공급라인(113, 123)들에 장착되어 머드 및 브라인을 순환시키는 순환펌프(119, 129)들을 포함한다.As shown in FIG. 1, the drilling vessel is connected to the tanks 110 and 111 storing the mud and connected to the mud supply line 113 extended by the drilling pipe, and to the tanks 120 and 121 storing the brine. And a brine supply line 123 connected to the drilling pipe, and circulation pumps 119 and 129 mounted on the respective supply lines 113 and 123 to circulate the mud and the brine.

아래에서는 이와 같이 구성된 머드 및 브라인 시스템을 구비한 시추선에 대해 구체적으로 설명한다.Hereinafter, a drilling vessel provided with the mud and brine systems configured as described above will be described in detail.

시추선에는 머드를 제조하여 저장해 두는 제1메인탱크(110)들과 제1보조탱크(111)들이 배열되어 형성된다. 제1메인탱크(110)의 크기는 제1보조탱크(111)의 크기보다 크며, 사용될 머드의 양에 따라 선택적으로 제1메인탱크(110) 또는 제1보조탱크(111)를 사용할 수 있다.The drilling vessel is formed by arranging the first main tanks 110 and the first auxiliary tanks 111 to manufacture and store the mud. The size of the first main tank 110 is larger than the size of the first auxiliary tank 111, and may be selectively used according to the amount of the mud to be used, the first main tank 110 or the first auxiliary tank 111.

한편, 머드공급라인(113)은 제1메인탱크(110)들 및 제1보조탱크(111)들에서 각각 연장된 제1연장라인(115)이 제1메인라인(117)에 합류되고, 제1메인라인(117)에는 머드순환펌프(119)가 장착되며, 상기 제1메인라인(117)은 시추파이프들이 연결된 시추시스템(130)에 연결된다.Meanwhile, in the mud supply line 113, the first extension line 115 extending from the first main tanks 110 and the first auxiliary tanks 111 respectively joins the first main line 117. The first main line 117 is equipped with a mud circulation pump 119, the first main line 117 is connected to the drilling system 130 to which the drilling pipes are connected.

또한, 시추선에는 브라인을 제조하여 저장해 두는 제2메인탱크(120)들과 제2보조탱크(121)들이 배열되어 형성된다. 제2메인탱크(120)의 크기는 제2보조탱크(121)의 크기보다 크며, 사용될 브라인의 양에 따라 선택적으로 사용할 수 있다.In addition, the drilling vessel is formed by arranging the second main tank 120 and the second auxiliary tank 121 to manufacture and store the brine. The size of the second main tank 120 is larger than the size of the second auxiliary tank 121 and may be selectively used according to the amount of brine to be used.

그리고 브라인공급라인(123)은 제2메인탱크(120)들 및 제2보조탱크(121)에서 각각 연장된 제2연장라인(125)이 제2메인라인(127)에 합류되고, 제2메인라인(127)에는 브라인순환펌프(129)가 장착되며, 상기 제2메인라인(127)은 시추파이프들이 연결된 시추시스템(130)에 연결된다.In addition, the brine supply line 123 has a second extension line 125 extending from the second main tanks 120 and the second auxiliary tank 121, respectively, joined to the second main line 127, and the second main line 127. The line 127 is equipped with a brine circulation pump 129, and the second main line 127 is connected to the drilling system 130 to which the drilling pipes are connected.

도 1에 도시된 바와 같이 머드의 양 및 브라인의 양에 따라 머드공급라인(113)과 브라인공급라인(123)을 복수의 라인으로 분할하여 제1메인탱크(110)에 저장된 머드 및 제2메인탱크(120)에 저장된 브라인을 신속하게 시추시스템(130)의 드릴 비트로 공급할 수 있게 구성한다.As shown in FIG. 1, the mud and the second main are stored in the first main tank 110 by dividing the mud supply line 113 and the brine supply line 123 into a plurality of lines according to the amount of mud and the amount of brine. The brine stored in the tank 120 is configured to be quickly supplied to the drill bit of the drilling system 130.

그리고 제1메인탱크(110) 및 제2메인탱크(120)에 연결된 제1연장라인(115)들과 제2연장라인(125)들에는 밸브(140)가 장착되어 머드 및 브라인의 공급 및 차단을 제어하며, 머드순환펌프(119)의 전후 및 브라인순환펌프(129)의 전후에도 밸브(140)가 장착되어 머드 및 브라인의 공급 및 차단을 제어한다.In addition, valves 140 are mounted on the first extension lines 115 and the second extension lines 125 connected to the first main tank 110 and the second main tank 120 to supply and block mud and brine. The valve 140 is mounted to the front and rear of the mud circulation pump 119 and the front and rear of the brine circulation pump 129 to control the supply and blocking of the mud and brine.

또한 시추시스템(130)에서 연장된 회수라인(150)은 제1메인탱크(110) 및 제2메인탱크(120)에 연결되며, 회수라인(150)을 통해 회수된 머드 및 브라인은 회수라인(150)에서 제1메인탱크(110) 및 제2메인탱크(120)로 연장된 회수분기라인(151)을 통해 각각 회수된다.In addition, the recovery line 150 extended from the drilling system 130 is connected to the first main tank 110 and the second main tank 120, the mud and brine recovered through the recovery line 150 is a recovery line ( 150 is recovered through the recovery branch line 151 extending to the first main tank 110 and the second main tank 120, respectively.

이와 같이 구성된 시추선에 있어서 머드를 공급하고자 할 경우, 제1메인탱크(110)에서 머드를 제조한 후에 머드순환펌프(119)를 가동시켜 제조된 머드를 시추시스템(130)으로 공급한다. 시추시스템(130)으로 공급된 머드는 드릴파이프를 통해 드릴 비트로 공급된 후 회수되는데, 회수된 머드는 회수라인(150) 및 회수분기라인(151)을 통해 빈 제1메인탱크(110)에 저장된다.When the mud is to be supplied in the drilling vessel configured as described above, after the mud is manufactured in the first main tank 110, the mud circulation pump 119 is operated to supply the mud to the drilling system 130. The mud supplied to the drilling system 130 is recovered after being supplied to the drill bit through the drill pipe, and the recovered mud is stored in the empty first main tank 110 through the recovery line 150 and the recovery branch line 151. do.

한편, 시추시스템(130)에 브라인을 공급하고자 할 경우, 제2메인탱크(120)에서 브라인을 제조한 후, 머드순환펌프(119)를 정지시키고 브라인순환펌프(129)를 가동시켜 제2메인탱크(120)에 저장된 브라인을 시추시스템(130)으로 공급한다. 시추시스템(130)으로 공급된 브라인은 드릴파이프를 통해 드릴 비트로 공급된 후 회수되는데, 회수된 브라인은 회수라인(150) 및 회수분기라인(151)을 통해 빈 제2메인탱크(120)에 저장된다.On the other hand, if you want to supply the brine to the drilling system 130, after manufacturing the brine in the second main tank 120, the mud circulation pump 119 is stopped and the brine circulation pump 129 to operate the second main The brine stored in the tank 120 is supplied to the drilling system 130. The brine supplied to the drilling system 130 is recovered after being supplied to the drill bit through the drill pipe, the recovered brine is stored in the empty second main tank 120 through the recovery line 150 and the recovery branch line 151. do.

이와 같이 본 발명에 따른 시추선은 머드 순환 후에 준비된 브라인 순환이 바로 이루어질 수 있기 때문에 시추작업의 시간을 단축할 수 있고, 필요에 따라서는 제1메인탱크(110)의 용량이 필요한 머드에 비해 부족할 경우 제2메인탱크(120)에서 머드를 제조할 수도 있다.As described above, the drilling vessel according to the present invention can shorten the time of drilling because the prepared brine circulation can be made immediately after the mud circulation, and if necessary, the capacity of the first main tank 110 is insufficient compared to the required mud. The mud may be manufactured in the second main tank 120.

본 발명에 따른 머드 시스템과 브라인 시스템은 드릴 십(Drill Ship)과 같은 이동식 시추선 및 고정식 시추선 등에 적용 가능하다.
The mud system and the brine system according to the present invention can be applied to a mobile drilling ship and a fixed drilling ship, such as a drill ship.

110 : 제1메인탱크
111 : 제1보조탱크
113 : 머드공급라인
115 : 제1연장라인
117 : 제1메인라인
119 : 머드순환펌프
120 : 제2메인탱크
121 : 제2보조탱크
123 : 브라인공급라인
125 : 제2연장라인
127 : 제2메인라인
129 : 브라인순환펌프
130 : 시추시스템
140 : 밸브
150 : 회수라인
151 : 회수분리라인110: the first main tank
111: first auxiliary tank
113: Mud Supply Line
115: first extension line
117: the first main line
119 mud circulation pump
120: the second main tank
121: second auxiliary tank
123: brine supply line
125: second extension line
127: second mainline
129: brine circulation pump
130: drilling system
140: valve
150: recovery line
151: recovery separation line

Claims (4)

머드를 저장해두는 제1탱크와,
상기 제1탱크에서 시추시스템으로 연장된 머드공급라인과,
브라인을 저장해두는 제2탱크와,
상기 제2탱크에서 시추시스템으로 연장된 브라인공급라인 및,
머드공급라인 및 브라인공급라인에 각각 장착되어 상기 제1탱크에 저장된 머드 및 상기 제2탱크에 저장된 브라인을 시추시스템으로 공급하는 순환펌프들을 포함하는 것을 특징으로 하는 시추선.
The first tank to store the mud,
A mud supply line extending from the first tank to a drilling system;
The second tank to store the brine,
A brine supply line extending from the second tank to the drilling system;
And a circulation pump mounted to a mud supply line and a brine supply line to supply a mud stored in the first tank and a brine stored in the second tank to a drilling system.
제1항에 있어서,
상기 제1탱크는 제1메인탱크와 제1보조탱크로 구분되며, 상기 머드공급라인은 상기 제1메인탱크와 상기 제1보조탱크에서 연장된 제1연장라인과, 상기 제1연장라인들이 연결되어 상기 시추시스템까지 연장된 제1메인라인을 포함하는 것을 특징으로 하는 시추선.
The method of claim 1,
The first tank is divided into a first main tank and a first auxiliary tank, and the mud supply line is connected to a first extension line extending from the first main tank and the first auxiliary tank and the first extension lines. And a first main line extending to the drilling system.
제1항 또는 제2항에 있어서,
상기 제2탱크는 제2메인탱크와 제2보조탱크로 구분되며, 상기 브라인공급라인은 상기 제2메인탱크와 상기 제2보조탱크에서 연장된 제2연장라인과, 상기 제2연장라인들이 연결되어 상기 시추시스템까지 연장된 제2메인라인을 포함하는 것을 특징으로 하는 시추선.
The method according to claim 1 or 2,
The second tank is divided into a second main tank and a second auxiliary tank, and the brine supply line is connected to a second extension line extending from the second main tank and the second auxiliary tank and the second extension lines. And a second mainline extending to the drilling system.
제1항에 있어서,
상기 시추시스템으로 공급된 머드 및 브라인은 상기 제1탱크 및 제2탱크로 회수되도록 상기 제1탱크와 제2탱크에 연장된 회수라인을 더 포함하는 것을 특징으로 하는 시추선.The method of claim 1,
The mud and brine supplied to the drilling system further comprises a recovery line extending to the first tank and the second tank to be recovered to the first tank and the second tank.
KR1020100123159A 2010-12-06 2010-12-06 Drill Ship with Mud System and Brine System KR101467606B1 (en)

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