Aiming at the complex flowing environment including the buried hill of Metamorphite, the active bottom water and the fracture at Budate Reservoir within Beir Depression of the Hailar Basin, combining the laboratory st...Aiming at the complex flowing environment including the buried hill of Metamorphite, the active bottom water and the fracture at Budate Reservoir within Beir Depression of the Hailar Basin, combining the laboratory studies and based on analysis of its drive mechanism, field wells’ parameters were used to analyze the effects of different conditions of the fractured metamorphic reservoir with bottom water on its law of wa-ter-cut variation and the waterflooding efficiency. The results show that for the Budate buried hill reservoir with bottom water, the gravity should be taken into consideration to determine reasonable perforation ratio and production pressure difference. And because of the acid sensitivity of the buried hill reservoir, application of proper clay stabilizer will enhance the field oil recovery to a satisfactory extent.展开更多
In this paper, we introduced reservoir characteristics in Block Xiao-he-long and evaluate the performance of the existing killing fluid system. According to the production requirements, a anti-swelling and low damagin...In this paper, we introduced reservoir characteristics in Block Xiao-he-long and evaluate the performance of the existing killing fluid system. According to the production requirements, a anti-swelling and low damaging system of chemical agents suitable for this block was optimized, including anti-swelling agent, water lock inhibitor, fluid-loss agent additives, plus a corrosion inhibitor HS-1 developed by in the lab. The system is composed by base liquid (0.7%X + 2.0%KCl +0.05%SY-1+ 0.05%HS-1+2.0% DST-1 dissolved in water) and weighting material (NaCl) with its density adjustable range between 1.0g/ml and 1.2g/ml. Its anti-swelling ratio achieves 53.80%, and the reservoir permeability recovery ratio reaches more than 95.0%.展开更多
文摘Aiming at the complex flowing environment including the buried hill of Metamorphite, the active bottom water and the fracture at Budate Reservoir within Beir Depression of the Hailar Basin, combining the laboratory studies and based on analysis of its drive mechanism, field wells’ parameters were used to analyze the effects of different conditions of the fractured metamorphic reservoir with bottom water on its law of wa-ter-cut variation and the waterflooding efficiency. The results show that for the Budate buried hill reservoir with bottom water, the gravity should be taken into consideration to determine reasonable perforation ratio and production pressure difference. And because of the acid sensitivity of the buried hill reservoir, application of proper clay stabilizer will enhance the field oil recovery to a satisfactory extent.
文摘In this paper, we introduced reservoir characteristics in Block Xiao-he-long and evaluate the performance of the existing killing fluid system. According to the production requirements, a anti-swelling and low damaging system of chemical agents suitable for this block was optimized, including anti-swelling agent, water lock inhibitor, fluid-loss agent additives, plus a corrosion inhibitor HS-1 developed by in the lab. The system is composed by base liquid (0.7%X + 2.0%KCl +0.05%SY-1+ 0.05%HS-1+2.0% DST-1 dissolved in water) and weighting material (NaCl) with its density adjustable range between 1.0g/ml and 1.2g/ml. Its anti-swelling ratio achieves 53.80%, and the reservoir permeability recovery ratio reaches more than 95.0%.
