Wyo. Code R. 053-0031-13
OSHA - Wyoming Oil and Gas Well Drilling, Servicing, Special Servicing, Completion and Plugging, and Abandoning of Wells
Chapter 13: Acidizing, Fracturing, Hot Oil and Cementing Operations
Effective Date: 11/07/2025 to Current
Rule Type: Current Rules & Regulations
Reference Number: 053.0031.13.11072025
(a) During acidizing, fracturing, cementing and hot oil operations, all lines connected from the pumping equipment to the Christmas tree or wellhead shall have a check valve installed as near the well as practicable. In addition, when a multi-pump manifold is used, a check valve shall be placed in each discharge line as near as possible to the other manifold(s).
(b) When used, pressure-recording equipment shall be located as far as practical from the wellhead and discharge line.
(c) Electrical continuity between items of equipment shall be maintained and the entire system shall be properly grounded.
(d) Equipment dumping sand into the hopper shall be properly bonded and grounded.
(e) When pumping flammable fluids:
(i) Lines containing flammable fluid shall not be laid under any vehicle.
(ii) Electrical equipment and internal combustion equipment not used in the job shall be shut down or off and any open flames extinguished.
(f) A pre-treatment pressure test on the pump and discharge lines shall be made at a pressure of at least the maximum expected treating pressure specified by the operator but not above the manufacturer's maximum pressure rating of the piping, pumps, valves, fittings or wellheads.
(g) A qualified employee shall:
(i) Check that all valves in discharge lines are open before pumping; and
(ii) If applicable, ensure flammable fluid spilled on location is cleaned up or contained so it is not a hazard before initiating pumping operations.
(h) The pump operator shall remain at the designated position while the pump is in operation, unless relieved by another authorized pump operator.
(i) All flow lines and relief lines shall be restrained to prevent whipping of these lines or a designated buffer zone established.
(j) Unauthorized persons shall remain at least seventy-five feet (75') from all pumping and pressure testing operations.
(k) Personnel shall not step over, walk on, straddle or drive equipment over pressurized lines.
(l) Flammable fluids shall not be bled back into open measuring tanks on equipment designed for pumping.
(m) Control measures shall be in place to prevent spills or accidental releases.
(n) Hammering, tightening or fitting a union on a pressurized discharge line shall be prohibited.
(o) All spilled oil or acid shall be contained and controlled, until it can be properly disposed of after breakout with precautions taken for personnel to prevent contact with such material.
(a) All acidizing, fracturing (fracking) and hot oil trucks and tanks shall be located at the appropriate safe location and distance from the wellbore as determined by the risk assessment.
(b) The vent line used in hot oiling operations shall discharge a minimum of thirty-three feet (33') from sources of ignition.
(c) All blending equipment used in fracturing (fracking) operations with flammable and/or combustible fluids shall be properly grounded to a conductive rod driven into the ground. All sand hauling equipment unloading sand into the blender hopper(s) shall be electrically bonded to the blender(s).
(a) Vaporizing units shall be located upwind or crosswind of the well.
(b) The employer shall ensure valve controls and workers are positioned on the side of the piping unit opposite to the side of the pipe supplying the well.
(c) A bleed-off valve shall be installed between the check valve and the wellhead.
(d) A shut-off (plug) valve and two (2) check valves shall be installed on the nitrogen or CO₂ line upstream of a manifold.
(e) A shut-off (plug) and a check valve shall be installed on a liquid line upstream of a commingling tee or manifold.
(f) Two (2) shut-off (plug) valves and a choke valve shall be installed on the release line with the shut-off valves located upstream of the choke valve.
(g) Hoses shall be inspected prior to use for damage to the external cover or braid. Defective hoses shall be removed from service.
(a) When cementing at shallow depths, the tubulars shall be secured to prevent pumping the tubulars from the hole.
(b) Overhead cementing lines shall be secured by a chain or wire rope to a location independent of the cementing system. Such chain or wire rope shall be of sufficient strength to support the anticipated load.