泥底辟/泥火山在海底陆坡区广泛分布，是寻找天然气水合物的重要标志，且该类型水合物储量巨大。然而部分泥底辟/泥火山发育区却未钻获水合物样品，如南海神狐海域2007年实施钻探的SH-5井。国内外学者通过实测、BSR计算等手段认为泥底辟/泥火山流体热异常制约了水合物的赋存，但缺少对流体热演化规律及其对水合物赋存的制约的定量研究。本项目拟以国际合作的方式，以热力学研究为主线，针对海底泥底辟/泥火山发育区天然气水合物研究与钻探中存在的相关流体热力学实际问题，以神狐水合物钻探区泥底辟/泥火山为研究对象，开展泥底辟/泥火山流体流动与传热过程数值模拟，分析泥底辟/泥火山演化过程中流体热力学时空规律，揭示泥底辟/泥火山精细的流体热结构，探讨泥底辟/泥火山流体热作用对水合物赋存的制约关系，建立一套泥底辟/泥火山发育区水合物资源评价的热力学指标体系，为流体渗漏构造环境下水合物成藏研究与勘探提供热力学理论依据。

Mud diapirs/volcanoes, which are often the primary indications for the occurrence of gas hydrate, are widely distributed on the submarine continental slope. Moreover, the reserves for this type of hydrate are huge. However, gas hydrates were not found from drilling in some areas with developed mud diapirs/volcanoes, such as the SH-5 borehole in Shenhu area, South China Sea. Previous studies based on in-situ heat flow measurement, BSR computation, etc., suggested that the thermal anomaly of mud diapir/volcano fluid led to hydrate decomposition. However, most of these studies are not sufficient for quantitative analysis of heat transfer law of fluid flow and its influence on the deposition and distribution of gas hydrate. This study intends to solve the scientific problems on gas hydrate research and drilling in the mud diapir/volcano developed area, based on the thorough investigations on thermodynamics by international cooperation. We plan to carry out numerical simulations of fluid flow and heat transfer in the mud diapir/volcano. Moreover, analyze the characteristics of fluid thermodynamics during the evolution processes of mud diapirs/volcanoes. Afterward, the sophisticated thermal structure of mud diapir/volcano fluid will be revealed. We will then discuss the relationships between the thermal effect of mud diapir/volcano fluid and the deposition and distribution of gas hydrate. In the end, we will finalize a thermodynamics method for evaluation of the potential for gas hydrate resource in the mud diapir/volcano developed area. This work can provide a theoretical basis for the gas hydrate research and exploration in the unique tectonic environments.