Kan. Admin. Regs. § 28-45a-12 - Design and construction of underground natural gas storage wells
(a) Each permittee
of an existing underground natural gas storage well and each applicant for a
permit for a new underground natural gas storage well shall ensure that each
underground natural gas storage well is constructed with surface casing. The
following requirements shall apply:
(1)
Surface casing shall be set through all fresh and usable water formations and
into competent bedrock.
(2)
Surface casing shall be cemented by circulating cement through the bottom of
the casing to the surface.
(3) The
annular space between the casing and the formation shall be filled with cement.
(b) Each new and each
existing underground natural gas storage well shall have double casing
protection. The following requirements shall apply:
(1) The production casing shall extend a
minimum of 105 feet into the salt formation.
(2) A tubing and mechanical packer assembly
shall be installed inside the production casing.
(3) The packer shall be set at a depth
approved by the secretary for the protection of public health, safety, and the
environment.
(c) Each
permittee of an underground natural gas storage facility shall install and
maintain a corrosion control system. The following requirements shall apply:
(1) The corrosion control system shall be
capable of protecting the well casings.
(2) The corrosion control system shall be
assessed according to the protocol and time schedule recommended by the
corrosion control system manufacturer, and the results reported to the
secretary.
(d) The
casing and tubing shall meet the performance standards for collapse resistance,
internal yield pressure, and pipe body yield strength for the well's setting
depths using criteria specified in the American petroleum institute's bulletin
5C2, twenty-first edition, dated October 1999, as adopted by reference in
K.A.R. 28-45-15.
(e) Only new
steel casing shall be installed in new underground natural gas wells. Used
parts, materials, and equipment that have been tested and certified for
continued service may be used for repairs.
(f) Liners shall extend from the surface to a
depth near the bottom of the production casing allowing room for any workover
operations.
(g) The following
cementing requirements shall be met:
(1) The
cement shall be compatible with the rock formation waters and the drilling
fluids. Salt-saturated cement shall be used when cementing through the salt
section.
(2) The cement across the
confining zone and to the surface shall have a compressive strength of not less
than 1,000 pounds per square inch.
(3) Remedial cementing shall be completed if
there is evidence of either of the following:
(A) Communication between the confining zone
and other horizons; or
(B) annular
voids that would allow either fluid contact with the casing or channeling
across the confining zone or above the confining zone.
(4) The following requirements for cement
evaluation shall apply:
(A) Samples shall be
obtained at the start and end of the cementing operation for evaluation of
cement properties. All cement samples collected shall be representative of the
cement being utilized.
(B) All
samples shall be tested for compressive strength.
(C) A cement bond log shall be run on the
surface casing, intermediate casing, and cemented production casing after the
neat cement has cured for a minimum of 72 hours.
(h) Casing patches shall be
prohibited, unless the secretary determines that the casing patches are
protective of public health, safety, and the environment.
(i) Each permittee shall pressure-test the
production casing for leaks when the well construction is completed.
(j) Each permittee shall submit a casing
inspection base log for the entire cased interval for the innermost casing
string or for the cemented liner that extends the entire length of the casing
after the well construction is completed.
(k) Each container utilized in drilling or
workover operations to contain workover wastes, drilling fluids, drilling mud,
and drill cuttings shall be required to be approved in advance by the
secretary. Drilling fluids, drilling mud, and drill cuttings shall be disposed
of in a manner determined by the secretary to be protective of public health,
safety, and the environment.
(l) A
licensed professional engineer or licensed geologist, or licensed professional
engineer's or licensed geologist's designee, shall supervise the installation
of each underground natural gas storage well.
Notes
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