• 专利标题:   Fracturing fluid capable of effectively reducing guanidine gum adsorption on rock surface comprises guanidine gum, modified graphene oxide, discharge aid, clay stabilizer, pH regulator and crosslinking agent.
  • 专利号:   CN116218504-A
  • 发明人:   LIU X, XUE J, SHEN L, WANG J, CHENG Q, HOU P, WANG R, LI L, FANG Y, QIU X, LI G, WANG X
  • 专利权人:   SINPOEC NORTHERN CHINA OIL GAS CO, HENAN TIANXIANG NEW MATERIAL CO LTD
  • 国际专利分类:   C09K008/66, C09K008/68
  • 专利详细信息:   CN116218504-A 06 Jun 2023 C09K-008/66 202356 Chinese
  • 申请详细信息:   CN116218504-A CN11591075 12 Dec 2022
  • 优先权号:   CN11591075

▎ 摘  要

NOVELTY - A fracturing fluid capable of effectively reducing guanidine gum adsorption on rock surface comprises 0.2-0.7 %mass guanidine gum, 0.1-0.5 %mass modified graphene oxide, 0.05-0.1 %mass discharge aid, 0.5-3 %mass clay stabilizer, 0.05-0.15 %mass pH regulator and 0.1-0.3 %mass crosslinking agent based on 100 mL water. The guanidine gum is at least one of guanidine collagen powder, hydroxypropyl guanidine gum and carboxymethyl guanidine gum. The discharge aid is perfluorononylphenol polyoxyethylene ether. The clay stabilizer is potassium chloride. The pH regulator is sodium carbonate. The crosslinking agent is 25% sodium tetraborate aqueous solution. USE - Fracturing fluid capable of effectively reducing guanidine gum adsorption on rock surface. ADVANTAGE - The fracturing fluid can avoid the blockage of channel radius between rocks after production stimulation operation, so that the flow ability of oil and gas fluid is greatly increased. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of fracturing fluid capable of effectively reducing guanidine gum adsorption on rock surface, which involves adding clay stabilizer to water, adding guanidine gum, stirring until guanidine gum is completely dispersed, adding modified graphene oxide, stirring to disperse, adding discharge aid, mixing to obtain fracturing fluid base fluid, adding pH regulator and crosslinking agent to the fracturing fluid base fluid, and stirring.