To deal with the inaccurate three-dimensional positioning of caves in the ultra-deep and high temperature Ordovician carbonate fracture-cave reservoirs in the Halahatang block, this article proposes a new integrated solution which combines seismic guided drilling (SGD) with onshore seismic while drilling (SVWD). SGD technique uses the newly acquired velocity by SVWD to update velocity model and re-place the target position in three-dimensional space to decrease the uncertainty of the target. The primary drilling targets of two wells in the Halahatang block have been selected to verify this solution. It’s the first time to collect onshore SVWD date domestically. The two wells landed in the target successfully by guiding and adjusting wellbore trajectory according to near real-time prediction results obtained from SVWD data. The success of these two wells shows the solution combining SVWD with SGD is practicable in solving the misplacing of target reservoirs caused by velocity and geological model uncertainty.
SHI Hongxiang, LI Hui, ZHENG Duoming, ZOU Keyuan, GENG Changbo, LIU Wei, LIU Yanmei, ZHEN Lingxia, ZHANG Hui, SHIM Y H
. Seismic guided drilling technique based on seismic while drilling (SWD): A case study of fracture-cave reservoirs of Halahatang block, Tarim Oilfield, NW China[J]. Petroleum Exploration and Development, 2016
, 43(4)
: 662
-668
.
DOI: 10.11698/PED.2016.04.21
[1] 赵文智, 沈安江, 周进高, 等. 礁滩储集层类型、特征、成因及勘探意义: 以塔里木和四川盆地为例[J]. 石油勘探与开发, 2014, 41(3): 257-267.
ZHAO Wenzhi, SHEN Anjiang, ZHOU Jin’gao, et al. Types, characteristics, origin and exploration significance of reef-shoal reservoirs: A case study of Tarim Basin, NW China and Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2014, 41(3): 257-267.
[2] ESMERSOY C, KANIA A, KASHIKAR S, et al. Optimum use of seismic data to reduce drilling risk and improve well placement[R]. Houston: 73 rd EAGE Conference & Exhibition, 2011.
[3] ESMERSOY C, RAMIREZ A, TEEBENNY S, et al. A new, fully integrated method for seismic geohazard prediction ahead of the bit while drilling[J]. The Leading Edge, 2013, 32(10): 1222-1233.
[4] PENG C, DAI J, YANG S. Seismic guided drilling: Near real time 3D updating of subsurface images and pore pressure model[R]. Tulsa: 6 th International Petroleum Technology Conference, 2013.
[5] YANG H, PAN W, CHEN L, et al. Seismic description of karst topography and caves of Ordovician carbonate reservoirs, Lungu area, Tarim Basin, West China[R]. Tulsa: SEG, 2010: 1256-1260.
[6] ESMERSOY C, YANG Y, SAYERS C M, et al. Seismic solutions for drilling: Real-time pore-pressure estimation ahead of the bit[R]. Copenhagen, Denmark: 74 th EAGE Conference & Exhibition, 2012.
[7] ESMERSOY C, RAMIREZ A, HANNAN A, et al. Guiding drilling by look ahead using seismic and LWD data[R]. SPE 164786, 2013.
[8] ESMERSOY C, HAWTHORN A, DURRAND C, et al. Seismic MWD: Drilling in time, on time, it’s about time[J]. The Leading Edge, 2005, 24(1): 56-62.
[9] CHANDRASEKHAR S, DOTIWALA F, LIM T K, et al. Reducing target uncertainties and guided drilling using seismic while drilling technology, a novel approach in Andaman Sea deep water[R]. SPE 165834, 2013.
[10] SHI H X, PENG G X, ZHENG D M, et al. Integration of surface seismic and well information to improve drilling success for onshore carbonate caves[R]. Amsterdam: 76 th EAGE Conference & Exhibition, 2014.
[11] OSYPOV K, NICHOLS D, WOODWARD M, et al. From quantifying seismic uncertainty to assessing E&P risks and the value of information[R]. Houston: 81 st SEG Annual International Meeting, 2011: 3683.
