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Well Development by Hydrofracturing

Hydrofracturing, commonly referred to as hydrofracking, is a well development process that involves injecting water under high pressure into a bedrock formation via the well. This is intended to increase the size and extent of existing bedrock fractures, thereby enlarging the network of water bearing fractures and size of the area supplying water to the well.

The procedure is often used to increase well yields of new deep drilled wells with marginal or inadequate production rates. It may also be applied to older existing wells that have progressively diminished recovery rates over time usually caused by blockage of rock fractures.

Yield Testing

Well yield increases, if successful, are generally modest but may constitute a significant increase if the original well yield was very low. Occasionally, large increases in well recovery rates are realized.

A typical well yield rate after hydrofracturing is 1/2 to 5 gallons per minute. At Grela Well Drilling we report a very high success rate. Many water well contractors do not include yield testing as part of their hydrofracking contract because injection water volumes are large enough that it may require an extended period of time to allow the bedrock aquifer to reach equilibrium. If the yield test is conducted immediately after the well is hydrofracked, the amount of water injected into the bedrock formation must be a consideration to avoid an over estimation of the increased well yield. Grela Well Drilling will come back and perform a yield test to give the well owner an accurate reading on their new well yield.

Well Development By Surging

Surging utilizes a solid-block plunger operated by a cable tool drilling rig. With an up and down plunging motion, water is forced into existing bedrock fractures followed by a reverse suctioning. The usual result, after a prolonged period of surging (usually 1-3 days), is a more productive well yield which is measured by bailing the well.

If you have a question on which method is best for your well call Grela Well Drilling Inc. for the correct answer.