Hoàn thiện công nghệ chế tạo hệ hóa phẩm nâng cao hệ số thu hồi dầu quy mô pilot áp dụng thử nghiệm công nghiệp cho đối tượng đại diện thuộc trầm tích Miocene mỏ Bạch Hổ, bể Cửu Long

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Tác giả: Thị Việt Nga Cù, Đức Huy Đinh, Long Hoàng, Thị Thu Hường Lê, Trường Giang Phạm, Vũ Anh Phan, Thanh Phương Trần

Ngôn ngữ: vie

Ký hiệu phân loại: 542.79 Techniques, procedures, apparatus, equipment, materials

Thông tin xuất bản: Dầu khí, 2022

Mô tả vật lý: 49 - 55

Bộ sưu tập: Metadata

ID: 499949

Thêm vào giỏ

Giới thiệu quá trình hoàn thiện tối ưu chế tạo hệ hóa phẩm nâng cao hệ số thu hồi dầu quy mô pilot phục vụ cho việc áp dụng thử nghiệm công nghiệp trên cơ sở kết quả đã thu được ở quy mô phòng thí nghiệm, kết quả đánh giá hiệu quả gia tăng thu hồi dầu trên mẫu vỉa thực tế cho đối tượng Miocene mỏ Bạch Hổ và kết quả thử nghiệm bơm ép hệ hóa phẩm trên mô hình mô phỏng khai thác cho giếng 1605 và 1609 tại khu vực phía Nam mỏ Bạch Hổ. Thành phần chính của hệ hóa phẩm tổ hợp chất hoạt động bề mặt gồm: sodium olefin sulfonate (SOS), alkyl aryl sulfonate (AAS), sodium dodecylbenzene sulfonate (SDBS), nonylphenol ethoxylate (NPEO) được cải thiện theo hướng giảm sức căng bề mặt (IFT) xuống thấp nhất, tăng khả năng tạo hệ vi nhũ tương cũng như khả năng chịu nhiệt độ và độ khoáng hóa/độ mặn cao. Thành phần polymer của hệ hóa phẩm được cải thiện theo hướng tăng độ nhớt, giảm độ linh động của hệ chất lưu bơm ép để tăng hệ số quét.This paper introduces the process of optimising the pilot-scale production of an EOR chemical system for trial industrial application based on laboratory testing results, the results of evaluating EOR efficiency on Miocene reservoir samples taken from Bach Ho field and the results of the chemical injection test on the reservoir dynamic model for wells 1605 and 1609 in the southern part of Bach Ho field. The main components of the surfactant chemical systems consist of sodium olefin sulfonate (SOS), alkyl aryl sulfonate (AAS), sodium dodecylbenzene sulfonate (SDBS) and nonylphenol ethoxylate (NPEO), which were improved by minimising interfacial tension (IFT), increasing the ability to form micro-emulsions as well as resistance to temperature and high mineralisation/salinity. The polymer composition of the chemical system was improved by increasing the viscosity and reducing the mobility of the injected fluid system to increase the sweep coefficient.

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