May 8, 2020 — HEC HA Blowout Preventers are simple to operate and proven effective at meeting the demanding pressure control requirements of today’s

149 KB – 6 Pages

PAGE – 2 ============
HA OPERATION AND MAINTENANCE 7/2019 HEC HA Blowout Preventers are simple to operate and proven effective at meeting the demanding pressure control requirements of drilling industry. It is highly recommended to perform periodic inspections of rubber, seals, and over – all integrity of the blowout preventer to reduce the risk of problems in a well control situation. INSTALLATION INSPECTION and INSTALL RECOMMENDATIONS It is recommended to install the H A blowout preventer using: 1. A control line to the closing (lower) port 2. A control line to the opening (upper) port 3. An accumulator bottle in the closing line for stripping. This bottle should be pre – charged to 500 psi for surface applications and 500 psi plus – sea applications 4. A hydraulic regulator to allow adjustment of operating pressure 5. F or an water soluble oil /water mix is acceptable Inspect for any damage to the top and bottom ring grooves. Clean the ring grooves with emery cloth and lightly oil prior to pl acing ring gaskets into place. ALWAYS replace ring gaskets when preventer is removed from a job site and reinstalled. Inspect studs and nuts for any damage. Replace any stud that is shorter than required to maintain full thread engagement or has thread dam age . Inspect all studs and nuts for tightness when the preventer is in use. Prolonged intervals of non – operation and no lubrication will cause seals to freeze up and possibly break or lock up the preventer. OPEN and CLOSE OPERATIONS HEC HA models are des igned to operate with any 1,500 psi approved hydraulic oil field system. A HA blowout preventer must be operated using hydraulic pressure. A ll models available from HEC can close and seal with no pressure adjustments on various casing sizes using 1,500 psi except the 13 – . On 13 – t is recommended to use the table be low for pressure adjustments when closing on the listed casing sizes to prevent damage to casing from sealing element segments maki ng contact with casing. Table 7: 13 – Casing Size (inches) 13 – 7 7 – 5/8 8 – 5/8 9 – 5/8 10 – 3/4 11 – 3/8 Adjusted psi 1,500 1,255 890 615 415 280 When hydraulic pressure is pumped into the closing chamber, the pisto n rises, forcing the element up. The spherical shape causes the element to close as it moves upward. Steel segments in the rubber support both the rubber and the drill string by containing the pressure below and providing a seal around the pipe. When there is no drill string present, the piston will continue to rise which forces the rubber element to seal on an open bore. The steel segments inside the element further aid in providing support to contain the well bore pressure. STRIPPING Stripping operation s are one of the most severe applications for any preventer because of the extreme stress the rubber element is exposed to when the drill string is moved through the preventer. A HA blowout preventer can offer a long stripping life if maintained and operat ed properly. Onl y the top portion of the HEC Kelly or string. The large reservoir of rubber allows the user to strip in and out of deep hole without replacing the element on the job site . The Recommended proce dure for stripping is: 1. Close the preventer with a maximum of 1,500 psi closing pressure unless otherwise recommended from the above table 2. Prior to initializing the stripping operation, reduce the closing pressure to a value sufficient to allow a slight lea k 3. Stripping should be done with a slight leak to provide lubrication and prevent excessive temperature buildup if conditions allow. As the sealing element wears, the closing pressure will need to be increased to prevent excessive leakage 4. If conditions do not allow leakage during stripping operations, closing pressure should be adjusted to a value sufficient to maintain a seal 5. If closing pressures approach 1,500 psi on the hydraulic close line, consideration should be given to switch to a different prevente r or new sealing element as the rubber may be worn and could cause further damage to the valve. Keep in mind, the minimum pressure required to maintain a seal during stripping, may vary depending on the sealing element and its service history. Figure 10: OPEN Figure 11: SEALED AROUND PIPE Figure 12: COMPLETE SHUT OFF

PAGE – 3 ============
HA OPERATION AND MAINTENANCE 7/2019 MAINTANANCE After 6 months or at the end of drilling of well, operate the packing element by pumping hydraulic oil into the close port an d wash grease and mud from around the packing element. Continue to operate the packing element (open & close hydraulic) while wash ing out packing element and through the bore of the BOP stack. Grease top of the packing element if possible and open completely. OPERATING CAPACITY HA Blowout Preventers can be operated via hydraulic connection ports located on each side of the lower b ody. Fluid capacities and body fitti ng sizes are listed in table 8 . STUD TORQUE When installing lid on HA Blowout Preventer, the bolts should be torq ued in the order shown in Figure 13. After the first 4 n uts are tightened, start back at 1 and tighten the nuts by going in a clockwise circle PHYSICAL DESCRIPTION and ENGINEERING DATA The following dimensions are for reference on all new manufactured HEC Blowout Preventers. Table 9: HA DIMENSIONS Bore and Working Pressure (psi) 7 – 5M 3M 5M 5M w/ 10M Bottom Flange 13 – 5M 13 – 5M w/ 10M Bottom Flang e A: (in.) 29.000 39.875 44.750 44.750 50.000 50.000 B: (in.) 7.063 11.000 11.000 11.000 13.625 13.625 C: (in.) 13.813 23.875 18.000 18.000 20.625 20.625 D: (in.) 7.750 9.125 11.500 11.500 13.250 13.250 E: (in.) 6.313 5.000 6.885 6.885 8.000 8.000 F: (in.) 11.750 13.188 17.500 17.500 18.500 18.500 G: (in.) 6.750 6.500 8.750 9.750 8.250 11.250 H: (in.) 31.000 42.310 42.500 43.500 45.375 48.375 J: (in.) 20.500 28.000 30.250 30.250 33.000 33.000 K: (in.) 2.6875 2.81 4.25 4.25 3.25 3.25 Weight (lbs.) 3,170 5,750 9,410 9,950 14,300 14,800 Table 8: HA HYDRAULIC OPERATING CAPACITIES Bore and Working Pressure (psi) 7 – 5M 3M 5M 5M w/ 10M Bottom Flange 13 – 5M 13 – 5M w/ 10M Bottom Flange Hydraulic Body Port:NPT 1 1 1 – 1/4 1 – 1/4 1 – 1/2 1 – 1/2 Hydraulic Connection: NPT Hydraulic Fluid: Open: Close: 3.21 4.57 6.78 11.00 14.59 18.67 14.59 18.67 17.41 23.58 17.41 23.58 Operati ng Pressure (psi) 1500 1500 1500 1500 1500 1500 Lid Nut Torque (lbf – ft)) 900 1500 2200 2200 3100 3100 Figure 14: HA DRAWINGS Figure 13: HA TORQUE PATTERN

PAGE – 4 ============
HA OPERATION AND MAINTENANCE 7/2019 Table 10: HA PARTS LIST Item Description Qty. 7 – 1/16″ – 5M 11″ – 3M 11″ – 5M 1 Body 1 10 – 0 005 10 – 0009 10 – 0013 2 Lid 1 10 – 0006 10 – 0010 10 – 0014 3 Piston 1 10 – 0007 10 – 0011 10 – 0015 4 Adapter Ring 1 10 – 0008 10 – 0012 10 – 0016 5 Packing Element 1 39 – 3900 36 – 3601 37 – 3700 6 Adapter Ring to Body O – Ring 1 81 – 8123 – 1 81 – 8130 – 1 81 – 8137 7 Adapter Ring Lid O – Ring 1 81 – 8121 81 – 8130 81 – 8133 – 1 8 Inner Adapter Ring Wiper 1 81 – 8100 – 1 81 – 8104 81 – 8108 9 Inner Adapter Ring Seal 1 81 – 8124 81 – 8126 81 – 8131 10 Outer Piston Seal 2 81 – 8125 81 – 8127 81 – 8137 – 1 11 Piston Wear Band 2 03 – 0030 03 – 0030 03 – 0030 12 Stump Seal 1 81 – 8102 – 2 81 – 8130 – 2 81 – 8137 – 2 13 Stump Wiper 1 81 – 8102 – 1 81 – 8106 81 – 8110 14 Hydraulic Ports 2 1″ NPT 1″ NPT 1 1/4 x 1″ NPT 15 Lid Studs 24 1.50×10 1.750×9.5 2.0×11.50 16 Lid Nuts 24 1 1/2 1 3/4 2 17 Flange Stud 12 1 3/8 – 8 x 7.50 1 3/8 – 8 x 7.0 1 7 /8 – 8 x 9.50 18 Flange Nut 12 1 3/8 – 8 1 3/8 – 8 1 7/8 – 8 19 Adapter Ring Wear Band 1 03 – 0031 N/A 03 – 0031 20 Stump Wear Band 1 03 – 0030 03 – 0030 03 – 0030 Item Description Qty. 11″ – 5M w/ 10M Bottom 13 5/8″ – 5M 13 5/8″ – 5M w/ 10M Bottom 1 Bo dy 1 10 – 0013 – 1 10 – 0001 10 – 0001 – 1 2 Lid 1 10 – 0014 10 – 0002 10 – 0002 3 Piston 1 10 – 0015 10 – 0003 10 – 0003 4 Adapter Ring 1 10 – 0016 10 – 0004 10 – 0004 5 Packing Element 1 37 – 3700 38 – 3800 38 – 3800 6 Adapter Ring to Body O – Ring 1 81 – 8137 81 – 8138 81 – 8138 7 Adapter Ring Lid O – Ring 1 81 – 8133 – 1 81 – 8141 81 – 8141 8 Inner Adapter Ring Wiper 1 81 – 8108 81 – 8112 81 – 8112 9 Inner Adapter Ring Seal 1 81 – 8131 81 – 8139 81 – 8139 10 Outer Piston Seal 2 81 – 8137 – 1 81 – 8141 – 1 81 – 8141 – 1 11 Piston Wear Band 2 03 – 0030 03 – 0030 03 – 0030 12 Stump Seal 1 81 – 8137 – 2 81 – 8140 81 – 8140 13 Stump Wiper 1 81 – 8110 81 – 8114 81 – 8114 14 Hydraulic Ports 2 1 1/4×1″ NPT 1 1/2×1″ NPT 1 1/2X1″ NPT 15 Lid Studs 24 2.0×11.50 2.25×13.25 2.25×13 16 Lid Nuts 24 2 2 1/4 2 1/4 17 Flange Stud 12 * 1 7/8 – 8 x9.50 1 5/8 – 8 x8.5 1 5/8 – 8 x8.5 18 Flange Nut 12 * 1 7/8 – 8 1 5/8 – 8 1 5/8 – 8 19 Adapter Ring Wear Band 1 03 – 0031 03 – 0031 03 – 0031 20 Stump Wear Band 1 03 – 0030 03 – 0030 03 – 0030 *13 – 5/8 – 5M requires 16 flange nuts and stubs Figure 15: HA EXPLODED VIEW

PAGE – 5 ============
HA OPERATION AND MAINTENANCE 7/2019 PACKERS and SEALS – 7 – OPERATIONAL CHARACTERISTICS Packer access o 200 cycles o Pressure test every 20 th cycle. o 20 Pressure test Temperature Range o Metallic: – 20 ° to 250 ° F o Elastomers 20 ° to 200 ° F Fatigue Test o 364 open and close cycles o 52 pressure test Operating Range o 7 – 1/16 0 to 5 – 1/2 o 11 0 to 8 – 5/8 o 13 – 5/8 0 to 10 – 3/4 Stripping o 1 tool joint (3 – 1/2 OD test mandrel with 18 ° API 5 – inch tool – joint profile)

PAGE – 6 ============
TERMS AND CONDITIONS Prices, Taxes an d Payment. The price for the product manufactured, remanufactured or tested (collectively referred to as “Equipment” or “Work”) by Horn Equipment (” HEC “) is that reflected in the Purchase Order. All prices shown are in U.S. dollars and are F.O.B. HEC ‘s shi pping point. Any tax or other charges imposed by law on the sale or production of goods or the performance of services shall be paid by the Buyer, unless the law specifically provides that such payment must be made by HEC , in which case Buyer shall reimbur se HEC for such payment as part of the purchase price. Custom duties, consular fees, insurance charges and other comparable charges will be borne by Buyer. HEC reserves the right to place a service charge on past due accounts at the highest rate permitted by law. Terms of payment are thirty (30) days from date of invoice unless otherwise stated in the quotation of HEC ‘s order acknowledgment. Warranty of Work . HEC Warrants to Buyer (and no other person or entity) its materials and workmanship for 12 months f rom the date of completion of the Work Order if the product manufactured is used in the manner it was intended, within the pressure range for which it was manufactured and is pr operly maintained. HEC warrants its materials and workmanship on remanufactured products for 12 months from the date of completion of the Work Order. Liability pertaining to products or parts not wholly of HEC ‘s manufacture shall be limited to the extent of HEC ‘s recovery from the manufacturer of such products or parts under its liab ility to HEC . Buyer’s exclusive remedies for damages, failure to perform, or breach of this Work Order or warranty claim shall be (i) correction of same by retesting, adjustment or repair, a t HEC ‘s option, or (ii) refund of the amount paid by Buyer for tha t portion alleged to be defective not to exceed the total amount paid HEC for the Product or Work. HEC has no liability for Buyer’s removal or reinstallation of products or equipment or for labor costs, expenses resulting of defects, recovery under general tort law or strict liability or for damages resulting from delays, loss of use, or other direct, indirect or consequential damages of any kind. THIS LIMITED WARRANTY AND REMEDY IS EXCLUSIVE AND IS IN LIEU OF ALL OT HER REMEDIES AND WARRANTIES, EXPRESS OR I MPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY, WORKMANSHIP OR FITNESS FOR ANY PARTICULAR PURP OSE, ALL OF WHICH ARE HEREBY DENIED BY HEC AND WAIVED BY BUYER, EXCEPT AS EXPRESSLY SET FORTH IN THIS AUTHORIZATION. Buyer acknowle dges and agrees that HEC is only responsible for the specific services agreed upon in the Work Order, and 1 SHALL NOT BE LIABLE FOR ANY CONDITIONS, CONTAMINANTS OR INDEPENDENT SO URCES THAT IN THE OPINION OF HEC HAVE AFFECTED THE PRODUCT OR WORK PERFORMED. HEC shall not be responsible for any undisclosed conditions or contaminants to which the Product has been exposed, including any defective, pre – existing, concealed, hidden or not visible conditions, and Buyer shall notify HEC before it begins any work of a ny knowledge or information that may assist HEC in the performance of services. This warranty shall terminate and be of no further force or effect in the event Buyer or any person or entity other than HEC attempts or undertakes to remedy any of the Work pe rformed by HEC that is claimed to be not as warranted or represented without first giving HEC written notice at of such claim and a reasonable opportunity to correct same. Engineering and Service . Upon request, HEC will provide engineering and/or technical information regarding its products and uses and, if leasable, will provide personnel to assist Buyer in effecting field installations and/or field service. Any such information, service or assistance so provided, whether with or without charge, shall be a dvisory only. Dispute Resolution . Any controversy arising or relating to this Lease shall be settled by arbitration in accordance with the rules of the Oklahom a Revised Uniform Arbitration Act, and judgment on the award rendered by the arbitrator(s) may be entered in any court having jurisdiction. Arbitration shall be held in Cleveland County, State of Oklahoma, and any question of law shall be decided in accordance with the laws of Oklahoma. Any language herein deemed invalid shall not af fect any other cla use, provision or paragraph herein. Certificate of Completion . Buyer agrees to specify the Work it desires to have HEC perform in the Work Order and to inspect the Product or Work upon HEC ‘s completion. Buyer agrees to notify HEC in writing of any clam, da mage, defects, deficiencies, or failures in performance within 30 days of the event giving rise to the claim, damage, defects , deficiencies, or failures. To the extent they may validly do so, the parties agree that the Work will be deemed to be fully a ccep ted without defect if no notice as required herein is received by HEC within 12 months of the completion of Work. Final Inspection, Delivery and Acceptance . Inspection and acceptance of Product or Work must be made at HEC ‘s plant or other shipping or recei ving point designated by HEC and shall be conclusive except as regards latent defects. Delivery shall be in acceptance with the requirements in the Work Order , provided, in the event Buyer is unable to accept delivery upon completion of the Work in accorda nce with such requirements, Buyer agrees that (i) title and risk of ownership shall pass to Buyer on date of HEC ‘s invoice, and (ii) Buyer will make payments within thirty (30) days after date of such invoice. HEC shall retain custodial risk of loss until delivery is made in accordance with such requirements. Shipment schedules are given as accurately as conditions permit and every effort will be made to make shipments as scheduled. HEC will not be responsible for deviations in meeting shipping schedules no r for any losses or damages to Buyer (or any third party) occasioned by deviations in the shipping schedule, whether due to A cts of God, orders bearing priority ratings established pursuant to law, fire, flood, shortages or failure of raw materials, suppli es, fuel, power or transportation, breakdown of equipment or any other cause beyond HEC ‘s reasonable control whether of similar or dissimilar nature than those enumerated. HEC shall have additional time within which to perform as may be reasonably necessar y under the circumstances and shall have the right to apportion its production among its Buyers in such a manner as it may co nsider to be equitable. HEC reserves the right to furnish commercially equivalent or better substitutes for materials or to subcont ract the Buyer’s order or portions thereof as HEC deems necessary. In no event shall HEC be liable for any consequential damages resulting from failure or delay in shipment. If Buyer requires drawings, procedures, standards, or similar material for approva l, shipping schedules are based on HEC having all required information and a firm order from Buyer which is enterable into production. Any hold points, witness poin ts or the need for inspection by Buyer’s representatives must be identified by Buyer at the time of quotation (if any) and/or placement in order that the effect on the prices or shipping schedules (if any) can be taken into account. Additional inspection or testing required by Buyer which affects normal product ion sequence will be considered as e xtending the shipping dates accordingly. Limitation of Liability . Buyer acknowledges that it is the Buyer’s responsibility to maintain the product manufactured, remanufactured or tested by HEC in accordance with the industry standards including but not lim ited to function testing of the Product. Buyer acknowledges that in the event any defect or damage occurs from Buyer’s use of the product serviced by HEC , Buyer holds HEC harmless for any and all failures and agrees to indemnify HEC against claims by third parties for damages that are not resulting from the acts or negligence of HEC . Buyer agrees to hold HEC harmless from and against all claims, demands, losses, damages and causes of action of whatever kind or nature for loss of or damage to property arisin g from or attributable to the negligence of Buyer. Buyer agrees to hold 1 harmless from and against all claims, demands, loss es, damages and causes of action of whatever kind of nature for the death(s) of or personal injury(ies) arising from or attributabl e to the negligence of Buyer. Buyer shall hold HEC harmless from and against all claims (including clean – up costs and loss(es) of oil, gas or hydrocarbons) arising from pollution, contamination, dumping or spilling of any substanc e resulting from the negli gence of Buyer. HEC ‘s total responsibility, if any, for any claims, damages, losses or liability arising out of or related to its performance of the Work Order or the Work covered hereunder shall not exceed the purchase price. Indemnity. IN NO EVENT SHALL HEC , ITS OFFICERS, AGENTS, OWNERS, REPRESENTATIVES OR EMPLOYEES BE LIABLE UNDER ANY THEORY OR REMEDY (CONTRACT, IMPLIED WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY, OR OTHER LEGAL OR EQUITABLE THEORY) FOR ANY PUNITIVE, ANTICIPATED OR LOST PROFI TS, DELAYS , LOSS OF USE, LOSS OF BUSINESS OPPORTUNITY, OR DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGES OR EXPENSE OF ANY KIND. HEC is not responsible for failures or damages resulting from Buyer’s alteration, lack of proper maintenance or lack of comp liance with recommended maintenance procedures, or which in HEC ‘s judgment affect the Product. As a condition to bringing suit to enforce HEC ‘s obligations hereunder, Buyer must give HEC written notice or any breach or failure of HEC within 30 days of its discovery. ALL INDEMNITY OBLIGATIONS AND/OR LIABILITIES HEREBY ASSUMED BY THE PARTIES SHALL BE: (I) SUPPORTED BY INSURANCE; (II) WITHOUT LIM IT; (Ill) AND WITHOUT REGARD TO THE CAUSE OR CAUSES THEREOF, INCLUDING, BUT NOT LIMITED TO, PREEXISITING CONDITIONS (WHETHER SUCH CONDITIONS BE PATENT OR LATENT). H 2 S Disclosure. Buyer has disclosed to HEC all exposures of the Product serviced by 1 to H 2 S and understands the following: Carbon and low alloy steels and cast irons selected using NACE 15156 – 2 P1 are resista nt to cracking under “defined” H 2 S conditions containing environments in oil and gas production but not necessarily immune to cracking under all sure conditions. Lab testing can only approximate field source conditions. HEC can only issue a limited certifi cate of compliance if the complete H 2 S history of the equipment cannot be or is not disclosed.

149 KB – 6 Pages