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Study on a single point deliverability formula of horizontal wells in Sulige Gas Field

ZHONG Jiajun1， TANG Hai1， LU Dongliang1， ZHANG Zongda2， LI Donglin2   

  1. 1. Southwest Petroleum University， Chengdu 610500， China； 2. Oil/gas Cooperative Development Branch， Bohai Sea Exploratory Drilling Engineering Corporation， PetroChina， Dagang 300280， China
  • Online:2013-04-20 Published:2013-04-20

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Abstract:

The horizontal well deliverability is one of the important parameters of the oil （gas） field and the theoretical basis for oil （gas） wells production proration. For low （special low） permeability oil （gas） field, the single point deliverability testing is a fast and effective way to determine the capacity of the oil （gas） wells. It only needs a stable point of the test data to determine the oil （gas） well capacity and it is simpler, less time-consuming and more economical compared with the back pressure well testing and the modified isochronal test. It is significant to develop the single point deliverability formula for Sulige Gas Field with low （special low） permeability of the gas reservoir capacity analysis. This paper applied gas reservoir numerical simulation method and selected the typical wells in Sulige Gas Field to establish the gas reservoir single well model, achieved single point method productivity formula with binomial deliverability equation, and verified the results of the formula. As a result, the formula has the high precision in the Sulige Gas Field of the capacity analysis of horizontal wells.

Key words: tight sandstone, micro-pore structure, constant rate mercury penetration, Ordos Basin

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