Because coiled tubing is inserted into the well while production is ongoing, it is also a cost-effective choice and can be used on high-pressure wells. These high-pressure packer elements will seal around the coiled tubing while it is stripped in and out of the well at pressure up to 15,000 psi. Additionally, some advances in coiled tubing allow for real-time downhole measurements that can be used in logging operations and wellbore treatments. Additionally, coiled tubing does not require a workover rig. Similar to a drilling rig, a workover rig is smaller and requires no mud pumping or pressure-control systems. They also are erratic, and sometimes uncontrollable, when pumping a multiphase fluid or straight gas. A series of roller cone bits, sized from 41/2″ to 43/4″, are in trials now. They feature improved hydraulics and sealed bearings, along with improvements to the roller cone bearing surfaces. The unique feature of this tool allows the packers to be run alone or in combination. The two main bore sizes used are 41/16″ and 51/8″. Depending on the type of CT application that is being run will determine which BOP stack will be required. The grip rams are bi-directional and are qualified to hold the coiled tubing and prevent the tubing from moving so the pipe rams can seal on the tubing.

Inhibitors can also be pumped between the packer elements to lubricate the coiled tubing. Use of friction reducers is the simplest method because it is an additive to the mud system and utilized “as needed.” Most mud companies will provide personnel, and chemicals for coil tubing drillout operations. Other optional products that may be used during a CTDO are lubricants and coil tubing corrosion inhibitor. In addition surfactants, in conjunction with friction reducers, helps reduce friction as well as torque and drag during coil tubing operations. Coiled tubing is chosen over conventional straight tubing because conventional tubing has to be screwed together. As we stated in our release, our operated Crosby well continues to produce above our 800,000 BOE-type curve with cumulative production of approximately 75,000 barrels equivalent at 91% oil over a 3-month period. For example, producers are subject to fluctuating revenue based on the price of oil over which they exert little control.

You can use the material by regulating, monitoring manufacturing quality, strict control of weld quality and use “smart pig” exploration and other means to reduce accidents caused by corrosion cracking. The coiled tubing unit is composed of a reel with the coiled tubing, an injector, control console, power supply and well-control stack. This will affect the flow of fluid to the power section and can affect its performance. CTDO require blended sweeps to clean out the wellbore after each plug is drilled and regular additions of friction reducer, to the active fluid system. They appear to be the most active group of late. Instead of removing the tubing from the well, which is how workover rigs fix the problem, coiled tubing is inserted into the tubing against the pressure of the well and during production. The coiled tubing is injected into the existing production string, unwound from the reel and inserted into the well. Enhanced Oil Recovery (EOR) processes, such as hydraulic and acid fracturing, can also be performed using coiled tubing.

So, it can be roughly stated that if everything remains as it is, these three natural resources industries most often used can keep the economy going for about a century. We’ve recently run tubing, which we believe will help maximize production going forward prior to installing an artificial lift. A workover rig is used to retrieve the sucker rod string, pump or production tubing from the well or run wireline cleaning and repair equipment into the well. Many times, remedial work constitutes employing a workover rig to repair the well. The rotating flange was designed for the high-pressure flanged rig ups and has reduced the time spent on alignment in tight job sites dramatically. Apart from this, these solutions can also aid in carrying out all the routine monetary transactions accurately and within the allotted time period. You can also consider taking off your automobile off the road for at least one day or a week, by using public transportation you can make a huge difference. Finally, we have recently spud our next operated TMS well, the Smith 5-29-1, and plan to drill at least 3 additional operated wells in 2013, as well as our non-operated activity within Encana.

This is the well in which EnCana pumped a million pounds of proppant and 29,000 barrels of frac fluid per stage or more than double the amount of proppant in fluid of any previous well. As a comparison, the Crosby well reached peak rate in about 7 days and was producing, at that time, approximately 2/3 of oil and 1/3 frac fluid. The other type of vibratory tool that uses the rotor/stator combination never completely blocks the flow of fluid. This type of tool is widely regarded as the standard tool to use in the shale plays to gain extended reach and decrease plug milling times. The operation of this type of tool is smooth and controlled, regardless of whether a multiphase liquid or straight gas is being pumped through it. These are some of the options to the challenges of coiled tubing while working in the long horizontal sections now being drilled. Coiled Tubing Operations All performed on a live well, there are a number of well intervention operations that can be achieved via coiled tubing. There are two main types of CT vibratory tools available. There is no hard and fast rule about which method or methods should be used.