Abstract:

The targeted ultra-deep fault-controlled fractured-vuggy oil and gas reservoirs in the Shunbei area， Tarim Basin is highly heterogenous with great burial depth and lithological complex overlying strata as well as multi-phase faulted fracture zones， all posing drilling and completion challenges with no ready-made experience to draw on. To deal with the problem， an geology-engineering integrated management platform based on exploration-development collaboration， integrating geological research， engineering design and implementation， is established to address the geological characteristics and engineering difficulties in developing the reservoirs. An integrated technical system featuring “high-yield well design” （including reservoir modeling and well type selection， reserve assessment and well pattern construction， well trajectory optimization） and “drilling and completion engineering” （including risk forecast and optimal fast drilling， staged acid fracturing and support completion， reservoir description and tailer-made stimulation） have been set up to shorten well completion cycle and enhance productivity. As a result， two hundred-million-ton-reserve zones （No.4 and No.8 faulted zones） have been discovered， verifying the technical strength of the system for the exploration and development of the Shunbei oil and gas field. References can also be gained from the implementation of the system for the development of other ultra-deep oil and gas reservoirs.

Key words: geology-engineering integration, fault-controlled fracture-vuggy oil/gas reservoir, Ordovician, Shunbei oil/gas field, Tarim Basin