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Repeated fracturing of double seal single plate in Tuha oilfield has increased production by two times

Repeated fracturing of double seal single plate in Tuha oilfield has increased production by two times

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  China Petroleum network news, September 18th, Turpan Hami oilfield Ma 56-15H wells through repeated fracturing, stable production for 60 days, Nissan oil 8.5 tons, two times the yield before the pressure. The success of this well proves that double seal single card repeated fracturing technology can improve the production of non - productive stratum accurately.

  Ma 56-15H well is a horizontal horizontal well developed in the central compact oil area of Ma. It was put into operation in July 2014. After 3 years of production, the production decreased seriously. From December 2016 to February 2017, the well was injected with water. In view of the increase of formation energy, Tuha oilfield has decided to make the formation of additional layers and repeat fracturing to improve production status and improve oil recovery.

  Because the length and spacing of the selected section are very small, the distance between packers is less than 20 meters. How to select the fracturing string technology to implement the precise fracturing of the new patching layer becomes the key of the construction. Technical personnel decided to adopt double seal single card fracturing technology. Well this technology for multi segment perforation, arbitrary layers or any cluster precision pressure selection, and has a high pressure, sand, baekwashing etc., can overcome the problems caused by releasing the interlayer pressure difference, to ensure the construction safety and releasing, after the release for the full well casing tube, follow-up convenient operation.

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