Interference Test Results Clause Samples

Interference Test Results. ▇▇▇▇ ▇. ▇▇▇▇▇▇▇, University of Alabama 3.6.2.1. Summary An interference test was run at the project pattern between April 17, 2008 and May 23, 2008. Pressure gauges were placed in the shut-in ▇▇▇▇▇ B-19-9 and B-19-7, while injection of water occurred in Well B-19-10 #2. The pressure measurements are shown in Figure 3.6.2. Well B-19-9 is about 822 ft southeast of the injector, while Well B-19-7 is about 1049 ft to the northwest. Injection commenced on May 3, 2008. The injection rate was variable, but stayed close to approximately 140 STB/day of water. Figure 3.6.2. Pressure responses relative to an "initial" pressure. An analysis of the interference test provided some clear evidence of communication between the injector and Well B-19-9. A fit of the data, shown in Figure 3.6.3, gave a total mobility, λT = k (kro/μo + krw/μw), of approximately 0.61 mdarcy/cP, and an average production thickness, h, of approximately 20 ft, assuming a porosity of 15.5%, total compressibility of 10 x 10-6/psi, and average reservoir injection rate of 140 bbl/day. Due to unforeseen difficulties at the injection well, leading to a delay in the start of water injection, the pressure gauge in Well B-19-7 was pulled before it could show a response. At this point, no "cause-and-effect" can be performed with the data from this well because the observed pressure response could be explained by a multitude of causes. In fact, the gauge was pulled before the closer well, B-19-9, had responded to injection. If the reservoir properties determined for B-19-9 apply, then it would have taken another five days to get an initial response in Well B-19-7 to the injection started on May 3. The Good News: 1. The injector is in communication with at least one nearby producer. 2. No obvious "short circuits" between the injector and either production well. 3. There was no evidence of significant layering (at least for the duration of the test). 4. The higher pressure of 5500 psi in Well B-19-9 versus the lower 5130 psi pressure in Well B-19-7, suggests reasonable levels of communication between some of injectors and producers in the vicinity. B-19-7 is closer to low-pressure producers, and B-19-9 is closer to high-pressure injectors. The Ambiguous: 1. Cannot say for certain that Well B-19-7 is in communication with the injector. 2. The low permeability of 0.6 mdarcy/cP versus 20 to 40 mdarcy/cP from cores suggests either low-permeability baffles between the injector and producer and/or some mobile water...