Optimization on Horizontal Well Length in the Sulige Type Tight Sand Gas Reservoir
Received date: 2011-12-16
Revised date: 2012-06-24
Online published: 2012-08-10
Horizontal well is one of the most effective ways for the development of tight sand gas reservoirs.The parameters,including effective drainage area,dynamic control reserves,productivity and so on,are directly impacted by horizontal well length.Aimed to the geological feature of the lenticular,isolated distribution of the most effective sand bodies in the Sulige type tight sand gas reservoir,integrating the static and dynamic,geological and development,technical and economic factors,rational horizontal well length is derived from five aspects,geological evaluation,theoretical formula calculation,numerical simulation,economic assessment and field application effects.Then the method of optimizing horizontal well length in tight sand gas reservoir is established.The results indicate that the rational horizontal well length of Sulige gas field is 1 000-1 200m while using type 70 rigs and drilling an effective sand body in the current economic and technical conditions.The successful application of the method in the Sulige gas field provides a reference for the design of horizontal well length in tight gas reservoirs of other fields.
WEI Yun-sheng, HE Dong-bo, JI Guang, TANG Hai-fa, ZHANG Jun-xiang . Optimization on Horizontal Well Length in the Sulige Type Tight Sand Gas Reservoir[J]. Natural Gas Geoscience, 2012 , 23(4) : 775 -779 . DOI: 10.11764/j.issn.1672-1926.2012.04.775
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