Performance Evaluation of Straight Well Multi-Thin Layer Fracturing Fluids

Qinxi Tang; Shifan Liu; Huohai Yang

doi:10.54097/kwwf4c19

Authors

Qinxi Tang Sulige Gas Field Branch of the Great Wall Drilling Company in CNPC, Panjin, China
Shifan Liu Petroleum Engineering School, Southwest Petroleum University, Chengdu, China
Huohai Yang Petroleum Engineering School, Southwest Petroleum University, Chengdu, China

DOI:

https://doi.org/10.54097/kwwf4c19

Keywords:

tight gas; water-based fracturing fluid; performance evaluation; high-temperature hexagonal.

Abstract

Taking the straight wells of Su10, Su11 and Su53 blocks in Surig block as the research object, we analyze the performance of fracturing fluid and combine the reservoir physical properties, rock mechanics and fracturing construction factors to clarify the degree of influence of the fracturing scheme on the production capacity of a single well, and seek the optimization countermeasures accordingly to improve the development effect of the target blocks. Large-scale hydraulic fracturing in this well area faces three major problems, such as the poor damping effect of fracturing fluid and the great damage to the reservoir; the lack of water resources and the difficulty of oilfield wastewater treatment; and the distribution of residual oil in the interstices, which requires the improvement of the recovery rate. In view of these problems, hydraulic fracturing is the main means to transform low-permeability oil and gas reservoirs. Fracturing fluid is an indispensable and important material for hydraulic fracturing, therefore, it is especially important to carry out the research on the rheology, gel-breaking characteristics, filtration loss, damage characteristics of reservoir rock samples, and stratigraphic compatibility of fracturing fluids, so as to obtain the evaluation of the performance of fracturing fluids. After the indoor analysis and research tests, the characteristics of fracturing fluids used in the field were grasped, and the performance of fracturing fluids was demonstrated to provide reference for the scientific and reasonable development of oilfields.

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