国家/地区 中国（7）
IPC部 C（7）
IPC大类 C09（7） E21（7） C07（2）
C08（2）
IPC小类 E21B（7）
IPC C09K008/58（2） C09K008/68（2） C09K008/88（2）
E21B033/13（2） E21B043/22（2）
发明人 LIU J（3） WANG H（2） ZHANG Y（2）
公开年 2022（7）
申请年 2021（7）
专利权人 PETROCHINA C.（3）

Gas channeling prevention system for gas flooding oil recovery process, includes foaming agent, polyelectrolyte, foam enhancer, oxidizing agent, chelating agent, and the balance is water.

XU H, CHEN L, REN J, SUN T, ZHANG B, LIU J, HUANG K, SHEN J, CHEN D

Pod-type degradable temporary plugging ball useful in temporary plugging treatment of oil and gas wells in fracturing system, comprises degradable outer shell (comprising e.g. polymerized product of glycolide, lactide, polybutylene succinate prepolymer) and inner core.

LI H, ZHANG Y, SHANG L, HUANG B, LIU J, WANG Y, YANG X, JIANG Q

New gemini surfactant used for used as a particle stabilized emulsion flooding system, which is used in tertiary oil recovery, and as a particle stabilized emulsion flooding system.

YANG S, HUANG J, LIAN L, WANG L, HU W, SONG W, ZHOU W, ZHOU X, HU J, LV W, TIAN M

Method of utilizing modified hydrogel to assist in supporting unconsolidated hydrate reservoir fractures, involves preparing modified high-swelling hydrogel, pressurizing target layer and injecting with pre-fluid to form artificial main fracture, adding hydrogel to sand-carrying liquid and stirring.

LIU C, FAN X, YAN L, LIU S, WANG H, ZHANG Y, ZHOU D, LIU X

Processing titanium alloy space sampling drill comprises e.g. spraying graphene dispersion liquid to titanium alloy drill bit subjected to nitriding treatment, and drying titanium alloy drill bit sprayed to obtain nitride-graphene composite coating on surface of titanium alloy drill bit.

WANG W, MENG D, FU Z, KANG J, WANG H, YUE W, WANG Q, GAO W, SHE D

Preparation method of amphiphilic graphene oxide heavy oil viscosity reducer viscosity reduction of heavy oil includes huff and puff, oil displacement, involves reacting mixture containing graphene oxide, a hydrophobic modifier, a coupling agent and a template agent.

WU Z, CHEN S, WU W, HUANG X, ZHAO F, TIAN Y, TAO Z

Acidizing solution used for preventing generation of hydrogen sulfide, and producing oil and gas, comprises hydrochloric acid, corrosion inhibitor, scale inhibitor, clay stabilizer and inhibitor.

HE D, TIAN H, ZHANG X, LIN L, LI K, LIU J, CAO Q, WANG F, LI Z, BAI L, TANG K, LUO Q, GONG Z, SHI G, LI M