Cusomization- Technical Solution Based on Customers' Needs

Deshi has comprehensive service capacity for oil fields. It can make the relatively complicated process of the oilfield to be carried out in an efficient and low-cost way. At present, a complete exploitation technology system for heavy oil with low permeability, heavy oil with high water content, extra heavy oil and deep heavy oil with high asphaltene and colloid in Deshi.

Strategy of Integrated Contracting Model for Oilfield Services

'Sparrows Strategy'---Small but Fully Equipped

• Deshi Group has a complete industrial chain and comprehensive service capacity to make the inefficient blocks productive.

• Being well-focused to solve the problem of small blocks to make them valuable.

Strategy of Integrated Contracting Model for Oilfield Services

'Short Circuit'---Movable and Flexible

Low Cost

• Decision-making advantage---corporate governance, perfect structure and efficient decision-making

• Investment advantage---central enterprise shareholder background, capital strength

• Technical integration---multiple overseas branches, cooperative research institutes

• Comprehensive ability---geological process research and design, engineering construction, chemical development and production

Case story --- Sinopec B Block 

Overview

In 2015, there were only 2 wells running, with 1.7t average daily produced fluid, 0.3t average daily produced, and the cumulative oil output is 8.6 x 10⁴t, recovery degree is 1.9%, average water content is 90%.

Understanding in development

Production Conditions

Since the beginning of the conventional production in September, 1999, the Taobao oilfield has been developed with three kinds of methods: conventional cold production, steam stimulation, cold oil production with sand. The following points are obtained based the analysis of production,

1. Low liquid and oil production of oil wells. At the initial stage of production, the single-well fluid production capacity is 4.72, and the oil production capacity is 1.99 tons. The single-well fluid production capacity decreased to 2.96 tons, and the oil production capacity  decreased to 0.19 tons before shut-in;

2. Low running rate and severe water flooded.

3. Serious sand production.

4. Low production rate  and cumulative oil output of single well.

Problems

There is bottom water in the bottom of target reservoir in Baicheng 87, and bottom water channeling during production and later channeling in oil-bearing layers caused the well water flooded, and serious sand production. Therefore, water and sand control are the most important problems to be solved.

Baicheng 87 block development target layer has bottom water, and bottom water channeling and later in the process of production of the reservoir into inside, which causes the well water flooded, and the serious sand production. At present it is difficult to use, therefore, water control and sand control are the important issues in the Baicheng 87 block .

In response to the problems in 87 block , Deshi Group uses its existing oil recovery technology，combines resources, and adopts the appropriate stimulation technology to resume production of the shutdown wells in the block.

Applied Technologies&Results in Sinopec B Block

                            Well Site of Sinopec B Block