連續油管作業裝置已被譽為“萬能作業機”，廣泛應用于油氣田修井、鉆井、完井、測井等作業，貫穿了油氣開采的全過程。
事實上連續油管所具有的帶壓欠平衡作業、作業的快速高效、對地層的低傷害、低成本（來源于工序的簡化）等等優點和應用價值，是在連續油管誕生30年后的上世紀90年代才真正被人們所認識。其后，連續油管廣范應用于油氣田修井、鉆井、完井、測井等作業，在油氣田勘探與開發中發揮著越來越重要的作用。
繼昨天介紹的CT EXPRESS快速部署連續油管設備和CT SEAS自動化海上CT設備，石油圈將繼續帶來Schlumberger公司的連續油管設備。
CT TComp CT海上運動補償系統
保護深水CT作業期間井口的完整性。石油圈原創www.h29736.cn
更安全、更高效的升沉補償和井口應力管理
CT TComp CT海上運動補償系統有3種通用的工作模式：頂推架模式、張緊架模式和內部補償張緊模式。其15-ft（4.57 m）長的鈦合金應力接頭，可允許作業期間設備有適當的活動量，并減小井口的應力。CT TComp系統可自動維持隔水管載荷和應力接頭的適應性，使二者處于最佳狀態。
頂推架模式石油圈原創www.h29736.cn
頂推架的縱向結構由BOP基礎架組成，BOP基架同時也是CT井架系統的基礎。頂推架設計座放在12-ft的中央，中心載荷最高達160,000 lbf （711.7 kN），可橫跨大槽口間距，或橫跨立柱式生產平臺（Spars）的墊架，從而將載荷分散到平臺甲板。
張緊架模式石油圈原創www.h29736.cn
CT TComp系統可以組裝成一部分或兩部分，當作一個350噸的張緊架使用，傳遞來自CT設備周邊的隔水管載荷。常規的框架需要在起吊完框架后再組裝所有的CT設備，耗時且有人身傷害風險。模塊化的CT TComp系統僅需一次起吊就可以完成組裝并安放就位。
內部補償張緊模式石油圈原創www.h29736.cn
由于Spars通常沒有補償模塊，司鉆需要在整個CT作業期間，監控并調整設備載荷。 然而，CT TComp系統可以自動監測、調整載荷。15-ft（4.57 m）長的鈦合金接頭可以吸收橫向未對齊造成的應力，避免隔水管和井口受到未知應力的作用。
貼心的設計元素增加安全性，節約時間石油圈原創www.h29736.cn
- 采用15,000-psi（103.4MPa）隔水管和BOP Grayloc單螺栓連接器，每個15,000-psi（103.4MPa）高壓接頭的連接時間從45分鐘減少到5分鐘；
- 高壓接頭數量從25個減少到4個；石油圈原創www.h29736.cn
- 插入絞車最多可節約2小時的作業時間，避免重大HSE風險；
- 液壓驅動鵝頸管，在安裝設備時最多節約90分鐘時間；
- 液壓接頭固定在框架上，減少了模塊組裝過程中接頭的數量；
- 牽線絞車及液壓軟管和電纜滾筒節約了安裝時間，增加了安全性。
應用范圍石油圈原創www.h29736.cn
- 具有升沉補償頂推架的作用；石油圈原創www.h29736.cn
- 在半潛式平臺或鉆井船上，作用相當于張緊架；
- 無需拆卸CT設備，即可同時進行電纜或鋼絲作業；
- 井架設備未進行升沉補償時，提供補償功能；
- 鉆機復員后，可為Spars提供升沉補償功能。
技術優勢石油圈原創www.h29736.cn
- 預先組裝成3個撬裝設備；石油圈原創www.h29736.cn
- 提供7ft（2.1m）垂向升沉補償；
- BOP和隔水管，采用高效的單螺栓卡箍連接；
- Class I，Division II–認證電力系統；
- 在可接受的應力范圍內，自動監測和維持井口應力；
- 兩套防墜落裝置，所有通道均有扶手。
X-11模塊化海上CT設備石油圈原創www.h29736.cn
X-11模塊化海上CT設備是一套靈活、多用途的系統，適用于多數海上設施，包括平臺、駁船、Spars、浮動設備、張力腿平臺等。X-11設備使用的連續油管直徑從1-in到2-in，更換不同直徑的連續油管非常安全、簡單、高效。石油圈原創www.h29736.cn
整個設備系統系統采用模塊化的設計，包括液壓動力裝置、控制室、滿足標準集裝箱運輸的貨籃，而且控制室可以架在液壓動力站頂部。這些設計都減少了CT系統設備總重和占用空間。
隨著我國東部油田增產挖潛工作的深入，需要采取在套管內側鉆水平井的方法對一批復雜斷塊油田開采剩余油，以及對待廢井、工程事故井、停產井進行挖潛復產或增產。我國西部油田的開采也以大量的深井、超深井及水平井、叢式井為主。因此，隨著我國側鉆井和小井眼鉆井需求的不斷增加，連續油管作業技術在我國水平井鉆井、修井及完井作業中將會發揮巨大的作用。
來自/Schlumberger ? 譯者/白小明 ? 編輯/Leia
CT TComp CT Offshore Motion Compensation System
Protect wellhead integrity during deepwater CT operations.
Safer, more efficient heave compensation and wellhead stress management
The CT TComp CT offshore motion compensation system has three versatile operating modes. Its 15-ft titanium stress joint allows movement during operations and relieves stress on the wellhead. The CT TComp system automatically maintains riser load and stress joint flexibility at optimum levels.
Jacking frame mode
The vertical structure of the jacking frame is made up of the base of the BOP crash frame, which also acts as the base for the CT mast system. The jacking frame base is designed to sit on 12-ft centers with center loading up to 160,000 lbf [711,700 N], allowing it to span large well-bay slots or sit across skid beams on spars, distributing load across the platform deck.
Tension-lift frame mode
Assembled in one or two pieces, the CT TComp system can also act as a 350-ton tension-lift frame that transmits riser load from the blocks around the CT equipment. Conventional frames require all CT equipment to be assembled after the frame is raised, requiring valuable time and risking injury to personnel. The modular CT TComp system can be assembled and swung into place with one lift.
Internally compensated tension-lift mode
Since spars do not usually have compensated blocks, the driller is forced to monitor and adjust for load on the blocks during the entire CT operation. However, the CT TComp system monitors load and adjusts automatically. A 15-ft titanium flex joint absorbs any stress caused by horizontal misalignment, eliminating undue stress on the riser or wellhead.
APPLICATIONS
- Functions as a heave-compensated jacking frame;
- Serves as a tension-lift frame on semisubmersibles and drillships;
- Allows simultaneous wireline or slickline operations without rigging down the CT equipment;
- Performs heave compensation when blocks are not compensated in the derrick;
- Provides compensation on spars after the rig is demobilized.
ADVANTAGES
- Preassembly onto three skids;
- Compensation for 7 ft of vertical heave;
- Efficient single-bolt clamp connections for BOPs and risers;
- Class I, Division II–certified electrical system;
- Automatic wellhead monitoring and maintenance within acceptable stress envelope;
- Two fall arrestors and handrails on all walkways.
Thoughtful design elements add safety and save time
- Connection time reduced to 5 minutes from 45 minutes per connection by using a 15,000-psi riser and BOP Grayloc single screw connector;
- Hydraulic connections are reduced to 4 from 25;
- Stabbing winch saves up to 2 hours and eliminates a major HSE hazard;
- Hydraulically actuated gooseneck saves up to 90 minutes during rig up;
- Hydraulic connections are frame mounted to reduce the number of connections during module assembly;
- Guy wire winches and hydraulic hose and cable reels reduce deployment time and increase safety.
X-11 Modular Offshore CT Unit
Adapt to offshore structures, improve safety, and reduce footprint.
The X-11 modular offshore CT unit was developed as a flexible, fit-for-purpose system that is easily adaptable for many offshore structures including platforms, barges, spars, floaters, and tension-leg platforms. The X-11 unit works with CT sizes ranging from 1 in to 2 in, and changing from one CT size to another is safer, easier, and more efficient.
Modular in design, the hydraulic power pack, the control cabin, and the transport baskets are built in standard shipping containers, and the control cabin can stack on top of the hydraulic power pack. This design reduces the total weight and footprint of the entire CT system.
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