hat
4. tèmik gerizon pou lwil lou se yon pwosè peryodik ik soti anwo nan syèl la pwodiksyon pou pwodiksyon ba. Sa vle di a kriz tansyon chak kombyin tan pompage inite w la pwal chanje adrese nòmalman daprè lalwa. A pwezan, chanjman estime inite w la kriz tansyon kesyon sa te poze se sou eksperyans. An plis, en piki lou lwil wells te konplike tou kondisyon travay ak twòp latwoublay. Wells yo varye sòti ak lòt. Li difisil pou jwenn yon solisyon chak jou pou tout wells yo. A moute kriz tansyon e desann nan kriz tansyon deplasman poli baton ki pa kapab fè ajusté grenn pa grenn. Li pwal difisil pou maksimize pwodiksyon estime inite yo ak wells.
eng
4. Thermal recovery for heavy oil is a periodic cycle process from high production to low production. That means the stroke frequency of pumping unit will change accordingly. At present, the change of pumping unit stroke mainly relies on experience. In addition, steam injection heavy oil wells have complicated work conditions and too much disturbances. Wells vary from each other. It is hard to find a regular solution for all the wells. The up stroke and down stroke speeds of polished rod can’t be adjusted separately. It will be hard to maximize the production of pumping units and wells.