Design Method and Development Trend of Landing Strings in Deepwater Drilling
-
摘要: 为解决深水钻井送入管柱设计及选型设计的问题,对深水表层钻井中送入管柱的负载力学特性及其在作业中遇到的问题进行了研究,建立了送入管柱设计计算力学模型,并结合实钻井进行了模型应用分析.实例计算结果表明,相对于其他设计方法,用推荐的卡瓦挤毁修正模型计算的φ168.2 mm和φ149.2 mm送入管柱的最大拉伸载荷分别为3 234和3 136 kN,与最大许用拉伸载荷最为接近,反之说明用该方法设计出的送入管柱更加安全;用建立的极限拉伸载荷模型计算出在处理导管下沉时φ168.2 mm和φ149.2 mm送入管柱的安全系数分别是1.37和1.26,均满足最小安全系数1.10的要求,且送入管柱尺寸越大,安全余量和安全系数越高;而普通钻杆无法满足安全作业要求.研究结果表明,深水送入管柱设计必须综合考虑卡瓦挤毁和导管下沉复杂情况处理过程中管柱承受极限拉伸载荷两方面的因素,确保送入管柱在作业过程中的安全性.Abstract: To solve the design and type selection of landing strings,an analysis of the loading characters of landing string and the main complexities the landing string potentially encountered in deepwater drilling were examined.As a result,a new mechanical model for landing string design was established,which was used in an analysis of model combined with actual drilling in deepwater environments.The results showed that the calculated maximum tensile load of φ168.2 mm and φ149.2 mm common landing string was 3 234 kN and 3 136 kN respectively with the recommended slip collapsing model,which was closer to the maximum allowable tensile load than that calculated by other design methods,which suggests that the new landing string design is safer.The safety factor of φ168.2 mm and φ149.2 mm landing string was calculated based on the ultimate tensile load model in the case of conductor sinking was 1.37 and 1.26 respectively,which meets the requirement for minimum safety factor of 1.10,and the larger the size,the higher the safety margin and safety factor of the landing string,while ordinary drill pipe cannot meet operational requirements.The research results demonstrate that in order to ensure operational safety,the design of deepwater landing string must consider both slip crushing and ultimate tensile load which act on the setting string when handling the conductor sinking.
-
Keywords:
- deepwater drilling /
- slip collapsing /
- slip collapse /
- landing string
-
-
[1] 管志川,柯珂,苏堪华.深水钻井井身结构设计方法[J].石油钻探技术,2011,39(2):16-21. Guan Zhichuan,Ke Ke,Su Kanhua.Casing design and optimization for deepwater drilling[J].Petroleum Drilling Techniques,2011,39(2):16-21. [2] Akers T J.Jetting of structural casing in deepwater environments: job design and operational practices[R].SPE 102378,2006.
[3] 刘正礼,叶吉华,田瑞瑞,等.南海深水表层导管水下打桩安装技术适应性分析[J].石油钻探技术,2014,42(1):41-45. Liu Zhengli,Ye Jihua,Tian Ruirui,et al.Adaptability of underwater tamping for deepwater drilling conductor installation in South China Sea[J].Petroleum Drilling Techniques,2014,42(3):41-45. [4] 路保平,李国华.西非深水钻井完井关键技术[J].石油钻探技术,2013,41(3):1-6. Lu Baoping,Li Guohua.Key technologies for deepwater drilling completion in West Africa[J].Petroleum Drilling Techniques,2013,41(3):1-6. [5] Sathuvalli U B,Payne M L,Suryanarayana P V,et al.Advanced slip crushing consideration for deepwater drilling[R].SPE 74488,2002.
[6] 付英军,姜伟,朱荣东.深水表层导管安装方法及风险控制技术研究[J].石油天然气学报,2011,33(6):153-157. Fu Yingjun,Jiang Wei,Zhu Rongdong.Installation method and risk control technology of surface conductor in deepwater drilling[J].Journal of Oil and Gas Technology,2011,33(6):153-157. [7] Vreeland T Jr.Deformation of drill pipe held in rotary slips[R].ASME 61-PET-20,1962.
[8] Reinhold W B,Spiri W H.Why does drill pipe fail in the slip area?[J].World Oil,1959(10):100-115.
[9] Paslay Paul R,Patilo P D,Patilo David,et al.A re-examination of drill/pipe mechanics[R].SPE 99074,2006.
[10] Brock James N,Chandler R Brett,Jellison Micheal J,et al.2 million-lbm slip-based landing string landing string system pushes the limit of deepwater casing running[R].OTC 18496,2007.
[11] 李迅科,周建良,李嗣贵,等.深水表层钻井动态压井装置的研制与应用试验[J].中国海上油气,2013,25(6):70-73. Li Xunke,Zhou Jianliang,Li Sigui,et al.Development and application test of the dynamic killing unit for deep water top-hole drilling[J].China Offshore Oil and Gas,2013,25(6): 70-73. [12] SY/T 6427-1999 钻柱设计和操作限度的推荐做法[S]. SY/T 6427-1999 recommended practice for drill stem design and operating limits[S]. [13] James C Leslie,Steve Williamson,Roy Long,et al.Composite drill pipe for extended-reach and deep water applications[R].OTC 14266,2002.
[14] Jellision Michael J,Payne Mike L,Shepard Jess S,et al.Next generation drill pipe for extended reach,deep water and ultra-deep drilling[R].OTC 15327,2003.
[15] Payne M L,Bailey E I.Purpose-built drillpipe for extended reach drilling[R].SPE 39319,1998.
计量
- 文章访问数: 3131
- HTML全文浏览量: 109
- PDF下载量: 3772
下载:
