Recently, China national offshore oil corporation boli 34-1 oil field successfully passed the state relevant departments to review, from the tens of thousands of tons of oil fields into the big oil fields. So far, the bohai sea has formed the development pattern of the "pressure matrix" of the big oil fields in the east, west, south, north and middle. In the south of the bohai sea, a typical complex block of oil and gas accumulation zone is characterized by "small, broken and scattered". For nearly four decades, the exploration and development of the bohai sea has been the highest in the world, with 11 oil and gas fields dotted with each other, but there are no large oil fields.
According to bohai petroleum institute of geological engineer li chao, 34-1 in bohai oilfield production of ten years ago, the main area of recovery of 45%, with an annual output of 1 million cubic meters of oil has been seven years in a row over and over 2 million cubic meters for 2 years. The momentum is strong, but it is hard to hide its smaller, more broken, more scattered underground "true colors". "Small" means that there are only eight sand bodies with reserves of more than 1 million cubic meters, and a maximum of 3 Wells per sand body, while other oil fields can be filled with hundreds of Wells. It's broken. It's the broken block. The dispersion refers to the initial amount of more than 40 million cubic meters of reserves in more than 100 sand bodies, each containing a few hundred thousand cubic meters of storage.
With the help of sand body description technology and new seismic data collection, China's cnooc has continuously deepened its understanding of the underground, and has been rolling out to the north, to the west, and to the potential area and potential sand. "Only the most recent three years, through the development of splicing tape, gas cloud area, to carry out technical research, rolling evaluation, oil field increases has proven reserves of more than 1700 cubic meters," deputy director of the institute bohai sea south to develop the bohai sea oil chamber Wang Yuejie said, "this is a great number of inside the medium oil field and found a medium-sized oil fields."
More special is, hundreds of millions of 34-1 in bohai oilfield reserves ", not exploration "work", but in the process of development, scientific research personnel through in-depth practice exploration and development integration, after careful research and rolling development, implement reserves scale exponentially. "For the first time, at least in our offshore oil fields." The bohai oil research institute reservoir master su yanchun said. The oil field exploration and development experience, to solve the bohai sea oil field the development environment of the current bottleneck, solve the cost problem of lower oil prices, realize the oil field increase reserves, low cost, high efficiency production, is of great significance.