The Relationship Study Between Acid-fracturing Scale and Open-flow Capacity in Fault-controlled Gas Reservoirs
The typical ultra-deep fault controlled fractured cave reservoir in 2nd Shunbei Block has been devel-oped.Due to the large amount of mud loss during drilling,acid fracturing and washing completion are usually cho-sen to remove blockages and stimulate production.In order to study the effects of acid fluid dosage and acid frac-turing scale on gas production capacity,numerical models were established based on the geological characteristics of 2nd Shunbei Block for drilling encountered fractures(leaking wells)and non-drilling encountered fractures.The fracture propagation gas reservoir numerical simulation method was used to simulate the acid fracturing fracture morphology of the two wells,further simulating the early production capacity of gas wells under two geological conditions and different acid fracturing scales,and conducting inversion verification with on-site data.The compar-ison results show that when a gas well encounters a fractured zone during drilling,acid fracturing can increase the production capacity of the gas well,but the amplitude is not significant.The scale of acid fracturing should not be too large;When a gas well does not encounter a fractured zone during drilling,acid fracturing can significantly in-crease the production capacity and control reserves of the gas well.
万方数据
维普
