Stimulation & Fracturing Services

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Our single or multiple fracturing stimulation uses coiled tubing for wells with multiple or bypassed pay zones. Dao Jereh's Polymer- and solids-free fluids increase effective fracture half-length to maximize fracture conductivity, meanwhile Increase permeability and production cost-effectively. We also offer real-time, on-site, microseismic hydraulic-fracturing monitoring. Operators are developing more difficult-to-access reservoirs and thin formations that were previously uneconomical to produce. Working with collaborator together, Dao Jereh offers innovative, cost-effective fracturing technologies to help achieve this goal.

When surface pumping equipment pump liquid with higher pressure than absorbency capacity of the formation, the pressure nearby the well wall will be increased and exceed the minimum crustal stress and tensile strength, thereby the fracture is created in the formation. As liquid with proppant is injected into the fracture, the fracture is extended far-forth to form certain length, width and height.As a result of high conductivity of created fracture, oil and gas can flow into the well, which has played a role of stimulation.

1. Premium fracturing proppant

Select fracturing fluid technology should consider five factors such as viscosity, liquid friction losses, filtration, flowback and compatibility with reservoir rock and fluid, the other two factors should be taken into account and sources.

2. Optimum design of fractruing

Considering of the maximum economic net present value, optimization fracturing design generally include below three elements:

  • Daily oil & gas production under the different fracture length and conductivity
  • Ensure the operation design of above fracture length and conductivity includes dosage of fracturing liquid
    and proppant, and sand adding procedure.
  • Combine above 1 & 2 to get fracture length basing on the highest NPV

3. Fracturing procedure

  • Separate-layer fracturing
  • High proppant concentration,Sand fallout on the end, refracturing
  • Make use of artificial barrier layer to control fracture height

4. Horizontal well fractruing

Horizontal well is an effective means to develop and produce the low permeability reservoir. The production capacity of horizontal wells is 2~5 times of the vertical wells. Fracturing in horizontal wells, the production capacity is increased much more higher than vertical wells, especially for low permeability reservoir. It is necessary to do fracturing for horizontal wells, if such situation exist as shale lamina, lower vertical permeability zone with difficult flow.

Horizontal fractruing technology mainly includs stage fracturing,simultaneity multi-entrance fracturing and isolation fractruing etc., with small granularity and lower density proppant.

5. Stimulation fracturing equipment