Preparation method of paraffin inhibitor for oil wells
A wax inhibitor, oil well technology, applied in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve problems such as poor viscosity reduction effect and unsatisfactory effect, achieve good wax inhibitor effect, and inhibit paraffin wax. The effect of depositing, improving fluidity
Inactive Publication Date: 2017-08-11
常州蓝森环保设备有限公司
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Abstract
The invention discloses a preparation method of a paraffin inhibitor for oil wells and belongs to the technical field of petroleum applied chemistry. The preparation method comprises: extracting lignin from papermaking black liquor, treating with sodium sulfite to obtain a lignosulfonate, oxidizing the lignosulfonate, grafting to acrylic acid to obtain a lignin-based viscosity reducer, ball-milling corn starch to reduce its crystallinity, oxidizing, reacting with maleic anhydride to obtain a starch-based surfactant which may form a polar film on both the wall of an oil well and the surface of paraffin particles to prevent deposition of paraffin crystal, and mixing with an aid to obtain the paraffin inhibitor for oil wells. The paraffin inhibitor prepared herein has good paraffin inhibitory effect for both oil collection lines and oil wells having different water contents; the concentration of the paraffin inhibitor varies little in a shaft, batch peeling of paraffin and jamming of a well are rarely caused, and the paraffin inhibitor has a promising application prospect.
Application Domain
Pipeline systemsDrilling composition
Technology Topic
Maleic anhydrideWater content +17
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