High temperature cementing cement and high temperature cementing slurry
A cement slurry and cement technology, which is applied in the field of cement, can solve the problems of insufficient long-term durability of cementing cement sheath, structural instability, and impact on oil and gas well recovery rate.
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[0036] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, and characteristics of the high-temperature cement and high-temperature cement slurry proposed in the present invention will be described below in conjunction with the preferred embodiments. And its effect, detailed description is as follows. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
[0037] A kind of high-temperature cementing cement that one embodiment of the present invention proposes comprises cement clinker and gypsum; The mineral composition of described cement clinker, by weight percentage, it comprises:
[0038] Tricalcium silicate: 30-40%;
[0039] Dicalcium silicate: 45-60%...
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