ExxonMobils board of directors anticipates appointing Neil A. Chapman as president of ExxonMobil Chemical effective Jan. 1, succeeding Stephen D. Pryor, who is retiring. Petromin will represent metalworking and hydraulic fluids supplier Houghton International in Saudi Arabia. Lubrizol will acquire Weatherford Internationals Houston-based Engineered Chemistry oilfield chemicals business and its Kingsville, Texas-based Integrity Industries drilling fluids business for an undisclosed amount in a transaction expected to close by years end.