Research On Replace Technology To Steam Stimulation Of Super Heavy Oil Reservoir

At present, with the development of economy, various countries in the world need moreand more oil and gas resources. And they have increasingly mature exploration anddevelopment technology. The development of heavy oil reservoir becomes more important.Steam huff and puff is the most important heavy oil thermal recovery method. Now, steamhuff and puff becomes more and more mature, and the output scale heavy oil is bigger. But,steam stimulation has limited heat semidiameter, and it can not be used without limit. Thusseeking replace rechnology is very important to Steam Stimulation.In this thesis, heat semidiameter and undeveloped reservoir distribution of steam huffand puff is calculated. Reasonable replace rechnology is obtained to increase developedreservoir distribution and recovery efficiency of super heavy oil Reservoir. The thesis hasextremely important significance to later stage stable yield of super heavy oil reservoir.First, typical vertical and horizontal well is choosed to build numerical simulation model.And, overfitting is made and the maximum heat semidiameter is calculated. It turns out thatpart undeveloped reservoir is still located in cross-hole after ten Rounds.Second, research on principle and adaptability of replace technology to SteamStimulation is made and screening criteria is obtained. The thesis makes research ofundeveloped reservoir of different types, elects reasonable replace technology, and analysissensitive parameter.At last, the thesis analyses economic benefit of the replace technology takingFengCheng oil field Zhong32wellblock QiGu group reservoir as an example.