- World Energy Overview
- China Shale Gas Projects Slow Down and Gradually Return to Rational
- The status and development direction of Chinese oil well cementing technology
- Horizontal wells in tight reservoirs staged fracturing technology status and progress
- What Will the Exit of US Shale Oil Companies Bring About?
- Boycott the contradiction of fossil fuel
- Exploration Is Facing Challenge in the Period of Oil Low Price
- Oil production over the group, Oil price fell below $60
- Greece Crisis Lead to the Decrease of Crude Oil Prices
- Break the monopoly of the “Three Barrels of Oil”
In recent years, with the oil and gas resources continue to make breakthroughs in key technologies, unconventional oil and gas resources in the industry and the market began to be sought. The US shale gas development has received periodic progress, and the tight gas also entered into a stage of rapid development. The tight oil and gas resources have wider distribution, reserves abundant, with the sub-horizontal well fracturing technology matures and widely used, it becomes possible for the dense oil and gas resources in the future to enter large-scale industrial development and utilization.
1. The overview of tight gas and stages fracturing of horizontal wells technology
Tight oil and gas is an unconventional oil and gas resources, the presence of a dense layer of the main source rock ode internal mezzanine and close source rock, and has a low density, large reserves of oil and gas well conditions and other characteristics, is the second after another large shale gas exploration hotspot fields. West unconventional energy development time earlier, mainly because from the 70s of last century, in the midst of a long-term energy crisis in the United States, for example, for global strategic considerations, the United States policy on the policy of tight gas reservoirs exploration and development to give a strong support to the exploration and development of unconventional oil and gas resources to get a lot of progress, the United States is currently the county’s most successful exploitation of tight oil, its success in this regards become more and more popular in the worldwide.
Tight oil and shale gas development approach is quite similar, all must be applied to the horizontal well fracturing technology, which is the technical background of tight oil and gas has rapidly development following the shale gas. Currently, horizontal well fracturing technology has been a massive worldwide application of the technology of research and testing have made certain achievements, technological innovation capability is increasing, and many large domestic oil companies have been establish and horizontal well fracturing technology-related subjects technology system, but also in Daqing, Shengli, Tarim oilfield low permeability 13 block implementation of the “factory” mode of operation, which greatly reduces the density of oil and gas development operating costs.
2. The application situation and development trends of horizontal well fracturing technology
2.1 The application situation of horizontal well fracturing technology.
The application of horizontal well fracturing technology has become a reservoir to improve oil recovery, oil exploration and development of the overall efficiency of an important way, is a mechanical packer stages fracturing, horizontal jet stages fracturing it, limiting segmented pressure process characteristics and parameters cracl, liquid rubber plugs were stages fracturing technology in China.
First of all, mechanical packer staged fracturing technology
The technology is divided into double seal single staged fracturing pressure and sliding sleeve fracturing packer section. The former is mainly applied to the well casing, because of its simple string structure, ease of construction and easy to play out the string after construction, can be targeted staged fracturing. After construction, is completed, you can quickly flow back fluid wells to the ground and put into production, it is worth nothing that the use of the process must ensure that the sealing performance of the packer, the latter is mainly applied to horizontal wells cased-hole completions its column structure is relatively complex, mainly by hydraulic anchor packer, screen guide shoe, packer tee and pitching blasting open sleeve sleeve and pressure-composition, the process can be achieved using multistage pressure crack effect, the production string string and fracturing string is one, the construction efficiency is very high.
Secondly, the level jet staged fracturing technology.
You may like: