Investing In High quality Pumps For Saltwater Disposal In the Oilfields, A Primer
Hello Alex, Thanks on your time at this time!
1-Are you able to inform our readers about your organization and background 2-With respect to SWD wells what should operators keep in mind
M and M Pump and Supply consists of three corporations: 1. M and M Pump and Supply Inc. Clay City and Mattoon, Illinois selling Oilfield Tubulars and Sucker Rods, Tanks each steel and fiberglass, downhole oilfield pumps, constructive displacement and centrifugal pumps, pipe, valves and fittings and absolutely anything that is used to drill, complete, or equip an oil or gasoline properly. We also service and restore natural fuel engines, salt water pumps and have a whole inventory of fibergass pipe and fittings for salt water injection lines. 2. PD Service Co. Clay City, Illinois furnishing oilfield trucking, oilfield construction crews, tank trucks, tubing and casing testing and inspection crews, frac and swab tank rentals, steamers and oilfield threading services. 3. McCoy Machine and Gear Co. Flora, Illinois furnishing full oilfield machine shop, new and rebuilt pumping units and mobile service trucks for field repair of pumping models and salt water pumps and manufacturing Miller Sand Pumps.
Almost about salt water disposal and injection wells I would advocate running a great string of Sealtite Plastic or CPVC lined tubing to guard against internal corrosion and being positive to guard the anular house between the casing and the surface of the tubing with a very good corrosion inhibitor, oxygen scavenger and biocide in either liquid or pellet form. In case you are water flooding make sure to choose a good producer in your injection well as these seem to make the very best injection wells with the perfect waterflood outcomes. Evidently have a petroleum engineer analyze your field for recoverable barrels of oil and desired injection rates per injection nicely to improve you odds of one of the best outcomes out of your waterflood. Set up a good chemical program in your injected water for control of corrosion and scaling tendencies. Starting this program immediately is significant to minimizing problems down the road that might result in excessive pulling of each producing and injection wells in a waterflood. Make sure to have a chemical company analyze injected and produced water for natural gas futures curve compatibility to stop doable extreme scaling and corrosion down the highway.
Three-What type of pumps work best for SWD wells How do they work
Every thing almost about pump choice for a salt water disposal or injection effectively is defined by barrels per day of water to be injected and most pressure required to inject the water at that price. As a result of most injection wells require anywhere from moderate(300 to 700PSI) injection pressures to very high pressures(over 2000PSI) a optimistic displacement pump reminiscent of a plunger or piston pump or a diaphragm type pump is usually required. All constructive displacement pumps require good water supply on the pump intake and it is essential to be sure this is achieved both by oversizing and flooding the pump suction or charging the pump suction with a correctly sized centrifugal pump. Pumps of this sort are often powered by either an electric motor or gasoline engine with satisfactory horsepower to handle the utmost flow rate and pressures that the pump will likely be topic to. Brake Horsepower requirement is calculated by the following formula: Gallons per minute occasions Most Stress times a continuing of .000648 equals Maximum Brake Horsepower Required.
Four-I’ve heard a lot about Hydra-Cell and Cat pumps, are there another brands to consider
Some of the more frequent manufacturers of Optimistic Displacement Pumps are Gaso, Wheatley, Oilwell, Gardner Denver, Bethlehem(B-Grasp), Kerr, Myers, Union, Ingersoll Rand, Cat, Hydracell among others. The key to selecting which pump works best on your utility once again depends upon barrels per day to be injected and the stress needed to accomplish this. Another key consideration can be having a distributor that stocks components for and services the model of pump you’re going to purchase in order that downtime for pump servicing and repairs can be saved to a minimum. Hydracell Pumps are generally inexpensive than plunger pumps if yow will discover one that meets your quantity and pressure requirements. These pumps will even probably require completea replacement after 5 to 10 years in service. Big plunger pumps such because the Gaso, Wheatley, Oilwell, Gardner Denver, Kerr, B-Master can run for 40 to 50 years if correctly mainained and rebuilt each three to 10 years depending on service conditions.
Cat pumps fill the area of interest for low quantity, very high pressure purposes particularly effectively at an affordable cost, however alternative half prices are usually fairly costly when the pump needs serviced. Most likely a very powerful thing you can do for any of the above pumps is to develop a good preventative upkeep program with particular consideration being paid to the situation of the oil in the facility finish of the pump. Pumps in this service often run 20 hours a day or more so it’s imperative that a daily preventative upkeep inspection is made and that fluid change intervals are adopted religiously.
5-Do sure manufacturers have pros and cons
6-Any upkeep or ongoing usage precautions to take with these type of pumps
#5 and #6- I partially answered these questions when responding to query #4. Different maintenance concerns. Be certain you purchase a packing gland wrench for tightening plunger packing on plunger pumps as well as a hammer type valve cowl wrench for pumps with threaded valve covers. Some pumps use a deep socket packing gland wrench and a few require a spanner wrench. In addition to every day power finish gear oil inspection, plunger packing must be tightened if plungers are leaking more than 3 to 5 drips per plunger per minute, nonetheless it’s crucial to not overtighten plunger packing as ceramic plungers that are normally used in salt water service will break if topic to heat over 150F and this may occur if packing is overtightened. It is often greatest to let plungers run for several minutes after tightening packing, flip the pump off after which really feel the ceramic part of the plunger and ensure it’s not hot to the touch, if it is your packing is probably too tight.
When you’ve got an injection effectively that goes on vacuum and want to suck your tanks dry, install a examine valve with a heavy spring which won’t enable the well to suck your tanks down. It will forestall plunger breakage because of the pump occurring air and sucking any BS on high of your water into the pumps valves. I would additionally recommend putting in a Y-strainer on the intake line to the pump to stop debris from plugging the pumps valves. Be sure you examine this strainer on a regular basis and after the preliminary hour of pump operation and after 24 hours of preliminary operation, as there’s likely to be debris in newly assembled traces that might plug the strainer. When running Hydracell Pumps test the gear oil day by day as if you happen to poke a hole in one of the diaphragms salt water could have direct entry to the pumps powerend. Finally make sure you oversize the pumps intake(suction) line and use as few 90 diploma els as possible to insure sufficient fluid provide to the pump. Remember the old adage that 6-90degree els almost equals a bull plug!!
7-Should an operator over compensate and purchase a pump that is much increased Horse Energy than is indicated
A certain quantity of security issue must be constructed into all pump and motor design within the event injection volumes exceed unique estimates or more strain is required to dispose of injected water than was initially estimated. Additionally it is clever not to run any pump at its maximum really helpful RPM as this will result in greater maintenance and rebuild costs than a pump being run at 80 to 85% of its most capabilities. I would suggest designing your pump system at 75 to eighty% of a pumps volume and strain capabilities. This may allow for some additional volume and stress if wanted with out causing maintenance complications down the highway.
8-What is a common downside you see in the field
Frequent problems which I see in the field are: A. Failure to correctly maintain powerend oil quality leading to costly powerend overhauls. B. Failure to oversize pump suction strains and permit for satisfactory water provide to the pumps intake valves resulting in premature valve failure. C.Failure to put in a bypass valve on pump discharge lines resulting in catastrophic falure corresponding to a broken pump crankshaft is somebody forgets and turns the pump on in opposition to a closed valve. D. Failure to display screen incoming water to pump and failure to recurrently examine display in suction Y-Strainers, particularly when water is being hauled into the lease by tank trucks(Note; A settling tank is greatest used when water is being hauled into the lease by tank trucks.) E. Failure to install a bleeder valve on pump discharge line to allow for bleeding any trapped air out of the pump. Failure to religiously follow a every day and weekly pump inspection and maintenance natural gas futures curve schedule.
9-Please Tell our readers about easy methods to handle corrosive fluids within the pump
In an effort to correctly prevent corrosion in a salt water pump, the fluid end of the pump ought to usually be cast from either aluminum bronze or 316 Stainless Steel which are extremely corrosion resistant. In some brines which aren’t too corrosive and the place pressures are not to high a bronze fluid finish will provide passable service at a value which is significantly inexpensive than aluminum bronze or stainless steel. Nonetheless, normal brass has restricted resistance to hydrogen sulfide and will usually wash out quickly when handling brines that carry H2S. It is usually a good suggestion to chemically treat injected water for both corrosion and scaling tendencies as this can prevent your natural gas futures curve injection effectively from plugging off and protect your downhole tubulars.