Target for testing perforating systems
AssigneeSchlumberger Technology Corporation
InventorsJames E. Brooks, Wenbo Yang
Life of this patent
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Abstract
A target for testing perforating systems, including an agglomeration of sand selected and conditioned to simulate a down-hole rock formation. A sand mixture may be selected to simulate the distributions of particle size, density and hardness of the down-hole rock formation. The sand may be agglomerated in the presence of a binding agent. Conditioning of the target may be conducted to simulate the compressive strength and porosity of the down-hole rock formation.
Claims33
A target used for testing a perforating system, comprising:
- a mixture of rock particles that are bound together with a preselected amount of binding material, the rock particles distributed between at least two distinct groups of two general sizes having a preselected ratio to provide a predetermined perforation characteristic that is similar to the perforation cbaracteristic of a down-hole rock formation.
A target for testing perforating systems, comprising:
- an agglomeration of sand particles and a removable binding agent, the sand particles distributed between at least two distinct groups of two general sizes having a preselected ratio to provide a penetration characteristic of a down-hole rock formation, the penetration characteristic relating to firing a perforating system into the rock formation.
A mixture for manufacturing perforating system targets, comprising smaller size rock particles and larger size rock particles, the sizes having about a 1:10 ratio in average size, the mixture comprising smaller size rock particles that are about 10% by weight of the mixture, and the mixture having a bulk density of about 80%, the mixture selected to have at least one of a perforation characteristic and a penetration characteristic similar to that of a down-hole formation.
A method for manufacturing a target for testing perforating systems, comprising:
- selecting a mixture of sand particles distributed between at least two distinct groups of two general sizes to simulate at least one of a perforation characteristic and a penetration characteristic of a down-hole rock formation;
- agglomerating the mixture of sand particles;
- and
- conditioning the agglomeration to simulate the down-hole rock formation.
A method for manufacturing a target for testing perforating systems, comprising:
- selecting a mixture of sand particles from at least two distinct groups of two general sizes having a preselected ratio to simulate at least one of a perforation characteristic and a penetration characteristic of a down-hole rock formation;
- forming a slurry of the sand particles with a melted binding agent;
- injecting the slurry into a target mold;
- cooling the slurry to solidify the melted binding agent;
- and
- removing the binding agent.
Dependencies are inferred from the claim text.